Question

2
worksheet - 8
a)sin x + Sin^2 x = 1
cos²x + cos^4 x=??

Answer 1

Answer:

1

Step-by-step explanation:

sin x + sin² x = 1

sin x = 1- sin²x

sin x = cos²x [sin²x +cos²x =1 , sin²x = 1-cos²x ]

and,

cos²x +cos⁴x

cos²x + (cos²x)²

sin x + sin²x = 1 [ sin x = cos²x]

thanks,

hope it will help...