Trigonometry/Identities/Quiz

1 Dividing the Pythagorean equation by which variable produces $cos^{2}\theta +\sin ^{2}\theta =1$?

	$x^{2}$
	$y^{2}$
	$r^{2}$

2 Dividing the Pythagorean equation by which variable produces $\cos ^{2}\theta +1=\csc ^{2}\theta$?

	$x^{2}$
	$y^{2}$
	$r^{2}$

3 Dividing the Pythagorean equation by which variable produces $1+\tan ^{2}\theta =\sec ^{2}\theta$?

	$x^{2}$
	$y^{2}$
	$r^{2}$

4

<math>\cos^2\theta + \sin^2\theta =

5 <math>\cot^2\theta + 1 =

	$\sin ^{2}\theta$
	$\sec ^{2}\theta$
	$\csc ^{2}\theta$

6

<math>\csc^2\theta - \cot^2\theta =

7 <math>1 + \tan^2\theta =

	$\sin ^{2}\theta$
	$\sec ^{2}\theta$
	$\csc ^{2}\theta$

8

<math>\sec^2\theta - \tan^2\theta =

9 <math>1 - \cos^2\theta =

	$\sin ^{2}\theta$
	$\sec ^{2}\theta$
	$\csc ^{2}\theta$

10 <math>1 - \sin^2\theta =

	$\sin ^{2}\theta$
	$\sec ^{2}\theta$
	$\cos ^{2}\theta$