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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 #481 : Trigonometry

Find the supplement of 112°.

Possible Answers:

None of the other answers.

$68^{\circ}$

$22^{\circ}$

$248^{\circ}$

$158^{\circ}$

Correct answer:

$68^{\circ}$

Explanation:

Two angles are supplementary if their sum is 180°. Thus, to find the supplement of an angle, subtract it from 180°. Remember that supplementary angles are positive angles.

$180^{\circ}-112^{\circ}=68^{\circ}$

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Example Question #22 : Complementary And Supplementary Angles

What angle do I add to $50^\circ$ to make the sum complementary?

Possible Answers:

$50^\circ$

$35^\circ$

$45^\circ$

$40^\circ$

Correct answer:

$40^\circ$

Explanation:

Step 1: Define complementary angles.

Complementary angles are two angles that must always add up to 90.

Step 2: Find the other angle:

The sum must be 90, so subtract the given angle from the sum to find the missing angle:

$90^\circ-50^\circ=40^\circ$

The missing angle is $40^\circ$

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Example Question #482 : Trigonometry

What must the sum of two angles be, given that the angles are supplementary to each other?

Possible Answers:

140

360

180

100

Correct answer:

180

Explanation:

Step 1: Define Supplementary angles. The answer is in the definition:

Two angles, if they are Supplementary to each other, their sum must equal degrees.

The sum of the angles must be $180^\circ$

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Example Question #21 : Complementary And Supplementary Angles

Find the complementary angle of $20^{\circ}$

Possible Answers:

$160^{\circ}$

$-20^{\circ}$

$70^{\circ}$

$340^{\circ}$

$25^{\circ}$

Correct answer:

$70^{\circ}$

Explanation:

To find the complementary angle of x, you need to subtract x from 90 degrees.

$Complementary = 90^{\circ} -x$

So, since we are trying to find the complementary angle of 20 degrees, we have:

$90^{\circ}-20^{\circ}=70^{\circ}$

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Example Question #21 : Complementary And Supplementary Angles

Find the complementary angle of $68.2^{\circ}$

Possible Answers:

$111.8^{\circ}$

$21.8^{\circ}$

$31.8^{\circ}$

$391.8^{\circ}$

$-68.2^{\circ}$

Correct answer:

$21.8^{\circ}$

Explanation:

To find the complementary angle of x, you need to subtract x from 90 degrees.

$Complementary = 90^{\circ} -x$

Since we are trying to find the complementary angle of 68.2 degrees, we have:

$90^{\circ}-68.2^{\circ}=21.8^{\circ}$

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Example Question #483 : Trigonometry

Find the Complementary angle of $\frac{\pi}{3}$ :

Possible Answers:

$\frac{\pi}{4}$

$\frac{2\pi}{3}$

$\frac{\pi}{2}$

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

$\frac{\pi}{6}$

Correct answer:

$\frac{\pi}{6}$

Explanation:

SInce the given angle is in radians to find the Complementary angle we need to subtract the giving angle from $\frac{\pi}{2}$ . Hence,

$\frac{\pi}{2}-\frac{\pi}{3}=\frac{\pi}{6}$

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Example Question #484 : Trigonometry

Find the Complementary angle of $\frac{\pi}{7}$ :

Possible Answers:

$\frac{5\pi}{14}$

$\frac{\pi}{2}$

$\frac{3\pi}{7}$

$\frac{6\pi}{7}$

89.55

Correct answer:

$\frac{5\pi}{14}$

Explanation:

SInce the given angle is in radians to find the Complementary angle we need to subtract the giving angle from $\frac{\pi}{2}$ . Hence,

$\frac{\pi}{2}-\frac{\pi}{7}=\frac{5\pi}{14}$

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Example Question #485 : Trigonometry

Find the Supplementary angle of $40^{\circ}$

Possible Answers:

$50^{\circ}$

$320^{\circ}$

$60^{\circ}$

$-40^{\circ}$

$140^{\circ}$

Correct answer:

$140^{\circ}$

Explanation:

Since we are trying to find the supplementary angle of 40 degrees, we have to:

$\textup{Angle}_1+\textup{Angle}_2=180^\circ$

$180^{\circ}-40^{\circ}=140^{\circ}$

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Example Question #21 : Complementary And Supplementary Angles

Find the Supplementary angle of $92.67^{\circ}$

Possible Answers:

$87.33^{\circ}$

$2.67^{\circ}$

The supplementary angle of $92.67^{\circ}$ does not exist, because the angle is larger than $90^{\circ}$ .

$267.33^{\circ}$

$-92.67^{\circ}$

Correct answer:

$87.33^{\circ}$

Explanation:

Since we are trying to find the supplementary angle of 92.67 degrees, we have to:

$\textup{Angle}_1+\textup{Angle}_2=180^\circ$

$180^{\circ}-92.67^{\circ}=87.33^{\circ}$

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Example Question #486 : Trigonometry

Find the supplementary angle of $\frac{\pi}{4}$ :

Possible Answers:

$\frac{\pi}{2}$

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

$\frac{\pi}{4}$

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

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

Correct answer:

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

Explanation:

Since the given angle is in radians to find the supplementary angle we need to subtract the giving angle from $\pi$ .

Hence,

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

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Trigonometry : Trigonometry

Study concepts, example questions & explanations for Trigonometry

All Trigonometry Resources

Example Questions

Example Question #481 : Trigonometry

Example Question #22 : Complementary And Supplementary Angles

Example Question #482 : Trigonometry

Example Question #21 : Complementary And Supplementary Angles

Example Question #21 : Complementary And Supplementary Angles

Example Question #483 : Trigonometry

Example Question #484 : Trigonometry

Example Question #485 : Trigonometry

Example Question #21 : Complementary And Supplementary Angles

Example Question #486 : Trigonometry

All Trigonometry Resources

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