Question

prove that:
plz....
this is for all maths genius! ​

Answer 1

Answer:

LHS

cotθ-tanθ

cosθ/sinθ-sinθ/cosθ

cos²θ-sin²θ/cosθsinθ

cosθ²-(1-cos²θ)/cosθsinθ                  (cos²+sin²=1)

2cos²θ-1/cosθsinθ= RHS

PROVED

Step-by-step explanation:

Answer 2

Answer:

ln this type of question always check the right hand side continuously.

As in right hand side only two trigonometric ratios named as sinθ and Cosθ are present only so we will convert the left hand side into sinθ and Cosθ by breaking tanθ & and cotθ

into sinθ and cosθ.

After that we will use the identity that

$cos2θ = cos^2θ - sin^2θ = 2 cos^2θ-1</p><p>$

After that we can easily Prove the right hand side is equal to left hand side as shown in attachment .