Question

7.
If cos x + sec x = -2, then for a positive integer n, cos X
a) 2
b)-2
c)-2 if n is odd and 2 if n is even
d) - 2 if n is even and 2 if n is odd

Answer 1

Step-by-step explanation:

If cos x + sec x = -2, then for a positive integer n, cos X

a) 2

b)-2

c)-2 if n is odd and 2 if n is even

d) - 2 if n is even and 2 if n is odd