cos^2(t)+4+4/sec(t)

Thank you for the opportunity to help you with your question!

4/sec(t)=4cos(t)

so we have

cos^2(t)+4+4cos(t)

if you need cos^2(t)+4+4cos(t)=0, then

(cos(t)+2)^2=0

cos(t)=-2

t=cos^(-1)(-2)

t=-22.7degree

Secure Information

Content will be erased after question is completed.

Enter the email address associated with your account, and we will email you a link to reset your password.

Forgot your password?

Sign Up