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IF (cosalpha)/a=(sinalpha)/b then a cos ...

IF `(cosalpha)/a=(sinalpha)/b` then a cos `2alpha+bsin 2 alpha`=……….

A

a

B

b

C

`a^2`

D

`-a`

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The correct Answer is:
A
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VGS PUBLICATION-BRILLIANT-TRIGONOMETRY (MULTIPLE CHOICE QUESTION)-TRIGONOMETRY (MULTIPLE CHOICE QUESTION)
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