Answers For No Joking Around Trigonometric Identities Review

Leo froze. His copied answer said: Multiply numerator and denominator by (1−cos x) . But he had no idea why.

Mrs. Castillo nodded. “You just derived it yourself.” Answers For No Joking Around Trigonometric Identities

He stood at the board, chalk in hand, sweating. He wrote (\frac{\sin x}{1+\cos x} \cdot \frac{1-\cos x}{1-\cos x}). Then (\frac{\sin x(1-\cos x)}{1-\cos^2 x}). Then (\frac{\sin x(1-\cos x)}{\sin^2 x}). Then (\frac{1-\cos x}{\sin x}). Then (\frac{1}{\sin x} - \frac{\cos x}{\sin x} = \csc x - \cot x). Leo froze