Question

if sin theta + sin square theta is equals to 1 then find cos square theta + cos to the power 4 theta

Answer 1

hey !!

Sin¢ + sin²¢ = 1 ------1)

sin¢ = 1 - sin²¢

=> sin¢ = cos²¢ ----2)

and..similarly we can write that ,

sin²¢ = cos⁴¢ -----3)

now , from equation 2, and 3 .

we got ..sin¢ + sin²¢ = cos²¢ +cos⁴¢

so...from 1 equation...

cos²¢ + cos⁴¢ = 1 .. prooved.

hope it helps you !!!

#Rajukumar111...