buktikan cot B+ tan B =cosec B sec B? Tolong bantu jawab pliss
Matematika
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Pertanyaan
buktikan cot B+ tan B =cosec B sec B? Tolong bantu jawab pliss
1 Jawaban
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1. Jawaban Fitra910
cot B = 1/ tan B = 1/(sin B/cos B) = cos B / sin B
cot B + tan B = (1/ tan B) + tan B = cos B/sin B + sin B/ cos B = (cos^2 B + sin^B) /(sin B cos A) = 1 / (sin B cos B) = (1/sin B ) (1/cos B) = cosec B sec B