Question

( 1 - Sin^2 A) Sec^2 A = 1​

Answer 1

Step-by-step explanation:

(1-sin²)= cos²

sec² = 1/cos²

apply both

Answer 2

Answer:

We have,

LHS = (1−sin 2 θ)sec 2 θ

⇒LHS=cos 2 θsec 2 θ [∵1−sin 2=cos 2θ]

⇒LHS=cos 2θ(cos2θ1)

[∵secθ= cosθ1 ]

⇒ LHS=1=RHS