Question

find the value of theta if 1-tan^2 theta/1+tan^2 theta=1/2 ; 0 is equal or greater than theta greater than 90​

Answer 1

Answer:

Let it be anything… tanθ , sinθ , cosθ or x or y or z .

So let's work with x .

If x+1/x=2 , what is value of x2+1/x2

As x+1/x=2

⟹(x+1/x)2=4

⟹x2+1/x2+2×x×1/x=4

⟹x2+1/x2+2=4

⟹x2+1/x2=2

If one continues on this, we will find that

With condition x+1/x=2 , we will always have xn+1/xn=2 , for any n .

Explanation:

hope it should help you.sorry if it's wrong