Mathematics
If cos A = sin B, show that A + B = 90°.
Trigonometric Identities
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Answer
Given:
cos A = sin B
⇒ cos A = cos (90° - B)
So, A = 90° - B
⇒ A + B = 90°
Hence, If cos A = sin B, then A + B = 90°.
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If cos A = sin B, show that A + B = 90°.
6 Likes
Given:
cos A = sin B
⇒ cos A = cos (90° - B)
So, A = 90° - B
⇒ A + B = 90°
Hence, If cos A = sin B, then A + B = 90°.
Answered By
5 Likes