Question

Question 2 Choose the correct option and justify your choice.
(i) 2tan30 / (1+tan^2 30) =
(A). sin60°
(B). cos60°
(C). tan60°
(D). sin30°
(ii) (1-tan^2 45) / (1+tan^2 45)
(A). tan90°
(B). 1
(C). sin45°
(D). 0
(iii) sin2A = 2sinA is true when A =
(A). 0°
(B). 30°
(C). 45°
(D). 60°
(iv) 2tan30 / (1 - tan^2 30)
(A). cos60°
(B). sin60°
(C). tan60°
(D). sin30°

Class 10 - Math - Introduction to Trigonometry Page 187

Answer 1

hi

Here is your answer !

I ) answer is A

ii ) answer is D

iii) answer is A

iv) answer is C

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Answer 2

Heya,

Here are the required solutions:-

1.) Option A is correct

2. Option D is correct

3. Option A is correct

4. Option  C is correct

Hope it helps u........