5.2d verify trig identities

Match the following

Select all that are true

Select all the correct variations of the following pythagorean identity:

$$1+\cot^2\theta=\csc^2\theta$$

Select all the correct variations of the following pythagorean identity:

$$1+\tan^2\theta=\sec^2\theta$$

$$\sin\theta\cdot\csc\theta$$

Simplify this trig expression into a single number.

$$\tan\theta\cdot\cot\theta$$

Simplify this trig expression into a single number.

$$\cos\theta\cdot\sec\theta$$

Simplify this trig expression into a single number.

$$\sin^2x+\sec^2x-\tan^2x+\cos^2x$$

Simplify this trig expression into a single number.

$$\tan\theta\cdot\cot\theta$$

Simplify this trig expression into a single number.

To verify, which side seems the most complex.