Question

What is the value of $x$ if ${\tan }^4\theta +\frac{(1-{\cos }^2\theta )}{{\cos }^2\theta }=x{\sin }^2\theta$ ?

• A. ${\cos }^2\theta$
• B. ${\cos }^4\theta$
• C. ${\sec }^4\theta$
• D. ${\tan }^2\theta$

Answer 1

The correct option is C ${\sec }^4\theta$