Question

If tan A=3/4 and A+B=90, find cot B

Answer 1

A+B =90°
⇒A= 90°-B

tanA = 3/4
⇒tan(90°-B) = 3/4

∵tan(90°-A) = cotA

∴tan(90°-B) = 3/4
⇒cotB = 3/4

Answer 2

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