Question

Give the trigonometric formulas of the following :

1. sin2A
2.cos2A
3.tan2A
4.cot2A​

Answer 1

Answer:

sin 2A has two formula

1) sin 2A ===> 2sinA cos A

2) sin 2A ====> 2tanA / 1+tan²A

cos 2A has four formula

1) cos 2A====> cos²A-sin²A

2) cos 2A ===> 2cos²A - 1

3) cos 2A===> 1 - 2sin²A

4) cos 2A===> 1-tan²A/1+tan²A

tan 2A===> 2 tan A/1 - tan²A

cot 2A===> 1/tan2A ==> 1 - tan²A/ 2 tan A

Answer 2

Step-by-step explanation:

Hey here is your ans :-

$\sin( {}^{2} )a + \cos ^{2}a = 1$

sin a= p/h p= perpendicular, h = hypotenuse

tan→>

Cos^2a-1=sin^2

p/b p= perpendicular b = base

tan*cot=1

cot A = b/p

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