Question

If cos x + cos² x = 1 , then sin² x + sin⁴ x = ?​

Answer 1

Answer:

cosx+cos

2

x=1⇒cosx=1−cos

2

x=sin

2

x

⇒sin

2

x+sin

4

x=cos

x

+cos

2

x=

1

Step-by-step explanation:

cosx+cos

2

x=1⇒cosx=1−cos

2

x=sin

2

x

⇒sin

2

x+sin

4

x=cos

x

+cos

2

x=

1