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Trigonometry : Trigonometry

Study concepts, example questions & explanations for Trigonometry

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6 Diagnostic Tests 155 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #2 : Angles

What is the relationship between angles 1 and 2?

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Possible Answers:

supplementary

complimentary

vertical

horizontal

equal

Correct answer:

supplementary

Explanation:

These angles are supplementary, as the sum of the angles is 180^o.

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Example Question #2 : Angles

What angle is supplementary to $34^\circ$ ?

Possible Answers:

$146^\circ$

$124^\circ$

$214^\circ$

$326^\circ$

$56^\circ$

Correct answer:

$146^\circ$

Explanation:

Two angles that are supplementary add up to $180^\circ$ . For our problem, that means that $x+34^\circ=180^\circ$ .

Subtract $34^\circ$ from both sides.

$x=180^\circ-34^\circ$

$x=146^\circ$

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Example Question #3 : Angles

Find the complementary angle to $\frac{\pi}{4}$

Possible Answers:

$-\frac{5\pi}{4}$

$\frac{3\pi}{4}$

$-\frac{\pi}{4}$

$\frac{\pi}{4}$

$\frac{7\pi}{4}$

Correct answer:

$\frac{\pi}{4}$

Explanation:

Two angles that are complementary must add to $\frac{\pi}{2}$ , therefore we subtract the given angle from $\frac{\pi}{2}$ as follows:

$\frac{\pi}{2} - \frac{\pi}{4} = \frac{2\pi}{4} - \frac{\pi}{4} = \frac{\pi}{4}$

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Example Question #461 : Trigonometry

Find the complementary angle to $\frac{\pi}{12}$

Possible Answers:

$-\frac{5\pi}{12}$

$\frac{23\pi}{12}$

$-\frac{\pi}{12}$

$\frac{5\pi}{12}$

$\frac{11\pi}{12}$

Correct answer:

$\frac{5\pi}{12}$

Explanation:

Two angles are complementary if their sum is $\frac{\pi}{2}$ , therefore we subtract the given angle from $\frac{\pi}{2}$ as follows:

$\frac{\pi}{2} - \frac{\pi}{12} = \frac{6\pi}{12} - \frac{\pi}{12} = \frac{5\pi}{12}$

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Example Question #462 : Trigonometry

Find the angle that is supplementary to $45^{\circ}$

Possible Answers:

$45^{\circ}$

$135^{\circ}$

$315^{\circ}$

$-225^{\circ}$

$-45^{\circ}$

Correct answer:

$135^{\circ}$

Explanation:

Two angles are supplementary if their sum is $180^{\circ}$ , therefore we subtract the given angle from $180^{\circ}$ as follows:

$180^{\circ} - 45^{\circ} = 135^{\circ}$

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Example Question #463 : Trigonometry

Find the angle that is supplementary to $179^{\circ}$

Possible Answers:

$-179^{\circ}$

$1^{\circ}$

$181^{\circ}$

$-180^{\circ}$

$180^{\circ}$

Correct answer:

$1^{\circ}$

Explanation:

Two angles are supplementary if their sum is $180^{\circ}$ , therefore we subtract the given angle from $180^{\circ}$ as follows:

$180^{\circ} - 179^{\circ} = 1^{\circ}$

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Example Question #1 : Angles

Find the angle that is supplementary to $\frac{7\pi}{8}$

Possible Answers:

$-\frac{3\pi}{8}$

$\frac{9\pi}{8}$

$\frac{\pi}{8}$

$-\frac{\pi}{8}$

$-\frac{7\pi}{8}$

Correct answer:

$\frac{\pi}{8}$

Explanation:

If two angles are supplementary their sum is $\pi$ , therefore we subtract the given angle from $\pi$ as follows:

$\pi - \frac{7\pi}{8} = \frac{8\pi}{8} - \frac{7\pi}{8} = \frac{\pi}{8}$

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Example Question #4 : Complementary And Supplementary Angles

Find the complementary angle to $17^{\circ}$

Possible Answers:

$-17^{\circ}$

$-73^{\circ}$

$117^{\circ}$

$163^{\circ}$

$73^{\circ}$

Correct answer:

$73^{\circ}$

Explanation:

In order for two angles to be complementary their sum must be $90^{\circ}$ , therefore the complementary angle can be found by subtracting the given angle from $90^{\circ}$ :

$90^{\circ} - 17^{\circ} = 73^{\circ}$

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Example Question #5 : Complementary And Supplementary Angles

Determine the complementary angle to $90^{\circ}$

Possible Answers:

$-90^{\circ}$

$90^{\circ}$

$10^{\circ}$

$0^{\circ}$

$270^{\circ}$

Correct answer:

$0^{\circ}$

Explanation:

The sum of two complementary angles must be $90^{\circ}$ , therefore in order to determine the complementary angle of $90^{\circ}$ we simply subtract from $90^{\circ}$ as follows:

$90^{\circ} - 90^{\circ} = 0^{\circ}$

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Example Question #11 : Complementary And Supplementary Angles

Find the positive complementary angle of $100^{\circ}$

Possible Answers:

$-100^{\circ}$

$80^{\circ}$

Does not exist

$260^{\circ}$

$10^{\circ}$

Correct answer:

Does not exist

Explanation:

In order for two angles to be complementary their sum must equal $90^{\circ}$ , therefore we subtract the given angle from $90^{\circ}$ as follows:

$90^{\circ} - 100^{\circ} = -10^{\circ}$

However, it was stated that we are looking for the positive complementary angle, therefore, there is no positive complementary angle.

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Trigonometry : Trigonometry

Study concepts, example questions & explanations for Trigonometry

All Trigonometry Resources

Example Questions

Example Question #2 : Angles

Example Question #2 : Angles

Example Question #3 : Angles

Example Question #461 : Trigonometry

Example Question #462 : Trigonometry

Example Question #463 : Trigonometry

Example Question #1 : Angles

Example Question #4 : Complementary And Supplementary Angles

Example Question #5 : Complementary And Supplementary Angles

Example Question #11 : Complementary And Supplementary Angles

All Trigonometry Resources

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