Math, asked by badshashaeikh123, 9 months ago

13. If angle

If angleABC is right angled at C, then the value of cos (A+B) is
(a)
(b) 1
(c) v3/2
(d) none of these

Answers

Answered by yadavsv09

0

Answer:

cos ( A+ B ) = 0

Step-by-step explanation:

we know C is 90°

And

A+B+C=180° ( angle sum property)

A+ B = 90

therefore Cos ( A+ B ) = 0

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