Upgrade to access all content for this subject

Which of the following is a Pythagorean Idenitty involving the $\sin(\theta)$

$\sin^{2}(\theta) - \cos^{2}(\theta) = 1$

$\sin(\theta) + \cos(\theta) = 1$

$\sin^{2}(\theta) + \cos^{2}(\theta) = -1$

$\sin^{2}(\theta) + \cos^{2}(\theta) = 1$