Question

In triangle ABC, if A+B=90° then the value of cos C is​

Answer 1

We know sum of all angle in a triangle is equal to 180 degree.

A + B + C = 180

C = 90

take cos both side

so,

Cos C = Cos90

we know that cos90 = 0

so ,

The value of cosC is 0

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Answer 2

Answer:

The value of cos C is 0

OK ........