Math, asked by Riddhi15102004, 11 months ago

Please answer as soon as possible

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Answers

Answered by nilanjandascr7

1

Answer:

a)0

Step-by-step explanation:

a+b+c=180

c=90

a+b=90

cos (a+b)=cos 90=0

Answered by geniusofmaths

1

Answer:

the ans of your que is 0

Step-by-step explanation:

a+b+c=180

c=90

a+b=90

cos(a+b)=cos90

=0

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