AM-896

R-formula

A Math · Secondary 3 · Medium · R-formula

Express

3\sin\theta+4\cos\theta

in the form

R\sin(\theta+\alpha)

, where

R>0

and

0<\alpha<\dfrac{\pi}{2}

. Find the value of

R

.

5
$\sqrt{7}$
$\sqrt{25}$
1

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