Question

IF sinx +sinx^2 =1 then cosx^2 + cosx^4 IS EQUAL TO​

Answer 1

Answer:

We are given sinx+ sin²x= 1

Then,

sinx= 1-sin²x

which is sinx= cos²x

Now in cos²+ cos⁴x ,put value

sinx+( sinx)²

But we are given the above equation is equal to one

therefore,

cos²x+ cos⁴ x=1