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Worksheet on Evaluation Using Trigonometric Identities

In worksheet on evaluation using trigonometric identities we will solve various types of practice questions on finding the value of the trigonometric ratios or trigonometric expression using identities. Here you will get 6 different types of evaluation trigonometric identities questions with some selected questions hints. 

1. If 1 + cos2 A = 3 cos A sin A, find the value of cot A.

2. If csc A – cot A = 23 then find the value of the following

(i) csc A + cot A

(ii) csc A

(iii) cot A

(iv) cos A

3. If sec θ + tan θ = x, find the value sec θ and tan θ.

4. If x cos A = 1 and y = tan A then find the value of x2 – y2.

5. If sec θ + tan θ = 3, find the value sin θ.

6. If sin A – cos A = 312 then find the value of the following

(i) sin A cos A

(ii) sin A + cos A

Hint: Use (sin A + cos A)2 + (sin A – cos A)2 = 2.

Worksheet on Evaluation Using Trigonometric Identities

Answers on Worksheet on evaluation using trigonometric identities are given below to check the exact answers of the questions. 


Answers


1. 12 or, 1.

2. (i) 32

(ii) 1312

(iii) 512

(iv) 513


3. x2+12x and x212x respectively.

4. 1

5. 44

6. (i) 34

(ii) 3+14





10th Grade Math

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