Find the decimal value of a trigonometric function - Pre-Calculus

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Question

Find the value of to the nearest tenth if and .

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Answer

Rewrite in terms of sine and cosine.

$cot(30)+tan(30)=\frac{cos(30)}{sin(30)}$+\frac{sin(30)}{cos(30)}$$

Substitute the known values and evaluate.

$$\frac{0.866}{0.5}$+\frac{0.5}{0.866}$=1.732+0.577367 =2.309367$

The answer to the nearest tenth is .

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Question

Find the value of

$\sin(270^\circ)+\cos(60^\circ)$ .

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Answer

Before beginning this problem on a calculator, though this is not necessary since these are special angles, ensure that the mode of the calculator is in degrees.

Input the values of the expression and solve.

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Question

Find the decimal value of

$2\cos\left($\frac{\pi}{6}\right)$

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Answer

To determine the decimal value of the following trig function, $2cos($\frac{\pi}{6}$)$ , make sure that the calculator is in radian mode.

Compute the expression.

$2cos($\frac{\pi}{6}$)=2(0.866)=1.732$

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Question

Determine the value of $cot($\frac{\pi}{3}$)$ in decimal form.

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Answer

Ensure the calculator is in radian mode since the expression shows the angle in terms of $\pi$ . Also convert cotangent to tangent.

$cot($\frac{\pi}{3}$)=\frac{1}{tan(\frac{\pi}${3})}= $\frac{1}{\sqrt3}$=0.577$

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Question

Determine the correct value of

.

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Answer

The question $sin($\frac{1}{2}$)$ asks for the y-coordinate on the unit circle when the degree angle is $\frac{1}{2}$ .

Be careful not to confuse finding the value of the angle when the y-value of the coordinate of the unit circle is $\frac{1}{2}$ .

Ensure that the calculator is in degree mode.

$sin($\frac{1}{2}$)=0.00872=0.009$

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Question

Find the value of to the nearest tenth if and .

Tap to reveal answer

Answer

Rewrite in terms of sine and cosine.

$cot(30)+tan(30)=\frac{cos(30)}{sin(30)}$+\frac{sin(30)}{cos(30)}$$

Substitute the known values and evaluate.

$$\frac{0.866}{0.5}$+\frac{0.5}{0.866}$=1.732+0.577367 =2.309367$

The answer to the nearest tenth is .

← Didn't Know|Knew It →

Question

Find the value of

$\sin(270^\circ)+\cos(60^\circ)$ .

Tap to reveal answer

Answer

Before beginning this problem on a calculator, though this is not necessary since these are special angles, ensure that the mode of the calculator is in degrees.

Input the values of the expression and solve.

← Didn't Know|Knew It →

Question

Find the decimal value of

$2\cos\left($\frac{\pi}{6}\right)$

Tap to reveal answer

Answer

To determine the decimal value of the following trig function, $2cos($\frac{\pi}{6}$)$ , make sure that the calculator is in radian mode.

Compute the expression.

$2cos($\frac{\pi}{6}$)=2(0.866)=1.732$

← Didn't Know|Knew It →

Question

Determine the value of $cot($\frac{\pi}{3}$)$ in decimal form.

Tap to reveal answer

Answer

Ensure the calculator is in radian mode since the expression shows the angle in terms of $\pi$ . Also convert cotangent to tangent.

$cot($\frac{\pi}{3}$)=\frac{1}{tan(\frac{\pi}${3})}= $\frac{1}{\sqrt3}$=0.577$

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Question

Determine the correct value of

.

Tap to reveal answer

Answer

The question $sin($\frac{1}{2}$)$ asks for the y-coordinate on the unit circle when the degree angle is $\frac{1}{2}$ .

Be careful not to confuse finding the value of the angle when the y-value of the coordinate of the unit circle is $\frac{1}{2}$ .

Ensure that the calculator is in degree mode.

$sin($\frac{1}{2}$)=0.00872=0.009$

← Didn't Know|Knew It →

Question

Find the value of to the nearest tenth if and .

Tap to reveal answer

Answer

Rewrite in terms of sine and cosine.

$cot(30)+tan(30)=\frac{cos(30)}{sin(30)}$+\frac{sin(30)}{cos(30)}$$

Substitute the known values and evaluate.

$$\frac{0.866}{0.5}$+\frac{0.5}{0.866}$=1.732+0.577367 =2.309367$

The answer to the nearest tenth is .

← Didn't Know|Knew It →

Question

Find the value of

$\sin(270^\circ)+\cos(60^\circ)$ .

Tap to reveal answer

Answer

Before beginning this problem on a calculator, though this is not necessary since these are special angles, ensure that the mode of the calculator is in degrees.

Input the values of the expression and solve.

← Didn't Know|Knew It →

Question

Find the decimal value of

$2\cos\left($\frac{\pi}{6}\right)$

Tap to reveal answer

Answer

To determine the decimal value of the following trig function, $2cos($\frac{\pi}{6}$)$ , make sure that the calculator is in radian mode.

Compute the expression.

$2cos($\frac{\pi}{6}$)=2(0.866)=1.732$

← Didn't Know|Knew It →

Question

Determine the value of $cot($\frac{\pi}{3}$)$ in decimal form.

Tap to reveal answer

Answer

Ensure the calculator is in radian mode since the expression shows the angle in terms of $\pi$ . Also convert cotangent to tangent.

$cot($\frac{\pi}{3}$)=\frac{1}{tan(\frac{\pi}${3})}= $\frac{1}{\sqrt3}$=0.577$

← Didn't Know|Knew It →

Question

Determine the correct value of

.

Tap to reveal answer

Answer

The question $sin($\frac{1}{2}$)$ asks for the y-coordinate on the unit circle when the degree angle is $\frac{1}{2}$ .

Be careful not to confuse finding the value of the angle when the y-value of the coordinate of the unit circle is $\frac{1}{2}$ .

Ensure that the calculator is in degree mode.

$sin($\frac{1}{2}$)=0.00872=0.009$

← Didn't Know|Knew It →

Question

Find the value of to the nearest tenth if and .

Tap to reveal answer

Answer

Rewrite in terms of sine and cosine.

$cot(30)+tan(30)=\frac{cos(30)}{sin(30)}$+\frac{sin(30)}{cos(30)}$$

Substitute the known values and evaluate.

$$\frac{0.866}{0.5}$+\frac{0.5}{0.866}$=1.732+0.577367 =2.309367$

The answer to the nearest tenth is .

← Didn't Know|Knew It →

Question

Find the value of

$\sin(270^\circ)+\cos(60^\circ)$ .

Tap to reveal answer

Answer

Before beginning this problem on a calculator, though this is not necessary since these are special angles, ensure that the mode of the calculator is in degrees.

Input the values of the expression and solve.

← Didn't Know|Knew It →

Question

Find the decimal value of

$2\cos\left($\frac{\pi}{6}\right)$

Tap to reveal answer

Answer

To determine the decimal value of the following trig function, $2cos($\frac{\pi}{6}$)$ , make sure that the calculator is in radian mode.

Compute the expression.

$2cos($\frac{\pi}{6}$)=2(0.866)=1.732$

← Didn't Know|Knew It →

Question

Determine the value of $cot($\frac{\pi}{3}$)$ in decimal form.

Tap to reveal answer

Answer

Ensure the calculator is in radian mode since the expression shows the angle in terms of $\pi$ . Also convert cotangent to tangent.

$cot($\frac{\pi}{3}$)=\frac{1}{tan(\frac{\pi}${3})}= $\frac{1}{\sqrt3}$=0.577$

← Didn't Know|Knew It →

Question

Determine the correct value of

.

Tap to reveal answer

Answer

The question $sin($\frac{1}{2}$)$ asks for the y-coordinate on the unit circle when the degree angle is $\frac{1}{2}$ .

Be careful not to confuse finding the value of the angle when the y-value of the coordinate of the unit circle is $\frac{1}{2}$ .

Ensure that the calculator is in degree mode.

$sin($\frac{1}{2}$)=0.00872=0.009$

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Find the decimal value of a trigonometric function - Pre-Calculus

Find the value of to the nearest tenth if and .

Rewrite in terms of sine and cosine. Substitute the known values and evaluate. The answer to the nearest tenth is .

Find the value of .

Before beginning this problem on a calculator, though this is not necessary since these are special angles, ensure that the mode of the calculator is in degrees. Input the values of the expression and solve.