Introduction to Trigonometric Identities

12. Trigonometric Identities / Introduction to Trigonometric Identities / Problem 4

Problem 4

Which of the following expressions is equivalent to $\tan^2x$ ?

$\sec^2x+1$

$\csc^2x-1$

$\frac{\sin^2x}{\cos^2x}$

$\frac{1}{\sec^2x}$

Which of the following expressions is equivalent to tan2x\tan^2xtan2x?