Question

if cosx + secx= 2, find the value of cos¹⁰x+ sec²⁰x​

Answer 1

Answer:

If cosx+secx=−2

cosx+

cosx

1

=−2

cos

2

x+1=−2cosx

⇒(cosx+1)

2

=0

⇒cosx=−1

⇒cos

n

x+sec

n

x=−2 if n is odd

⇒cos

n

x+sec

n

x=2 if n is even

Step-by-step explanation:

hope this helps u