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If sinA = 12 / 13 , so find 1 / cos A = ??

Posted by Shubham Saxena ???? 5 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Shubham Saxena ???? 5 years, 6 months ago

Thanks for answering.

1Thank You

Yogita Ingle 5 years, 6 months ago

If sinA = 12 / 13 , so find 1 / cos A = ?

sin²A + Cos²A = 1

(12/13)² + cos²A = 1

144/169 + cos²A = 1

cos²A = 1 - 144/169

cos²A = (169-144)/169

cos²A = 25/169

cos A = 5/13

1/cosA = 13/5

1Thank You

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