Math, asked by neelofer1192, 10 months ago

A+B=180then find cosA+cosB

Answers

Answered by kiyara01

2

0

Step-by-step explanation:

Let B = 180° - A.

Then,

cos A + cos B

= cos A + cos (180° - A)

= cos A - cos A [because cos (180° - x) = - cos x]

= 0

hope it will help you

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