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If secA=15/7 and A+B=90°. Find the …

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If secA=15/7 and A+B=90°. Find the value of cosecB.

Posted by Madeeha Dawood 4 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 4 years, 11 months ago

Sec A = 15/7 Cos A = 1/SecA Therefore CosA = 1/ 15/7 = 7/15
A + B = 90 or A = 90 - B

CosA = Cos(90-B)
7/15 = SinB
CosecB = 1/SinB = 1/ 7/15 = 15/7

1Thank You

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