In triangle ABC, angle C = 90 ° AB = 15 TgA = 1. Find tgA * CtgB.

univerkov | December 12, 2020 | education

Tangent – the ratio of the opposite leg to the adjacent leg, that is, tgA = CB / AC = 1
We need to find ctgB = CB / AC. Since CB / AC = 1, then CB / AC = 1
Then 1 * 1 = 1
Answer: 1

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