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The value of cos a/sin(90+a) +sin a/(sin (180+a) +cos (90+a)/tan a The value of cos a/sin(90+a) +sin a/(sin (180+a) +cos (90+a)/tan a
As we knowSin(90+A) = cos ASin(180+A) = - sinACos(90+A) = -sin APut thus conversion and find value
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