Further Symmetry Properties and the Pythagorean Identity (VCE SSCE Mathematical Methods): Quizzes

Cofunction identities

$\cos \theta$

$\sin \theta$

$\cos \theta$

$-\sin \theta$

$\cos^2\theta + \sin^2\theta = 1$

All values

$\frac{16}{25}$

Second quadrant

$\sin^2\theta = 1 - \cos^2\theta$