squaring both sides we get,We know that, tan2A = Sec2A – 1Now taking L.H.S we get,Whensec A + tan A = 2xAnd whenHence, Proved.

Q25 of 51 Page 54

If than prove that .

squaring both sides we get,

We know that, tan²A = Sec²A – 1

Now taking L.H.S we get,

When

sec A + tan A = 2x

And when

Hence, Proved.

Sushant reads part of a book in 1 hour. How much part of the book will he read in hours?

Prove that: .

If Sin 2 A = 2 Sin A. Find A.

Sec⁴ θ –sec²θ = tan⁴θ + tan²θ