Q. 5

# Mark the correct alternative in the following:

If 3 sin x + 4 cos x = 5, then 4 sin x – 3 cos x =

A. 0

B. 5

C. 1

D. None of these

Answer :

3sin(x)+4cos(x)=5

cos(37°-x)=cos 0° (∵ x=37°)

4sin(x)-3cos(x)=k

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