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What is the value of {sin(90 -x)cos [pi ...

What is the value of `{sin(90 -x)cos [pi - (x -y)]} + {cos (90- x) sin [pi- (y- x)]}` ?
`{sin(90 -x)cos [pi - (x -y)]} + {cos (90- x) sin [pi- (y- x)]}` का मान क्या है?

A

-cos y

B

- sin y

C

cos x

D

tan y

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  • What is the value of { sin (90 + x) cos (pi - (x-y))] } + {cos (90 + x)sin [ pi - (x - y)]} ?

    A
    `-cosy`
    B
    `-siny`
    C
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    D
    tan y

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