Answers For No Joking Around Trigonometric Identities [upd] Direct

“Due Friday,” she said. “No joking around.”

Leo nodded, but his brain had already hatched a plan.

Mrs. Castillo flipped through it silently. Then she smiled—a slow, terrifying smile. “Leo, would you come to the board? Prove number seven: (\frac{\sin x}{1+\cos x} = \csc x - \cot x).” Answers For No Joking Around Trigonometric Identities

From that day on, he never searched for “answers” again. He became the kid who said, “Let me prove it.”

Leo looked at the crumpled answer printout in his pocket. He’d had the ability all along. The only joke was that he’d tried to cheat his way out of thinking. “Due Friday,” she said

And he never joked around with trig identities again.

Mrs. Castillo nodded. “You just derived it yourself.” Castillo flipped through it silently

The next morning, he turned it in, feeling smug.