## anonymous 3 years ago Msin(Bt)+Ncos(Bt)=squareroot(M^2+N^2)sin(Bt+C)

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1. anonymous

Is this how it is supposed to look?

2. anonymous

$M \sin Bt+N \cos Bt=\sqrt{M^2+N^2} \sin (Bt+C)$

3. anonymous

Trying to solutions for the variable t, right?

4. anonymous

$M \sin Bt+N \cos Bt=\sqrt{M^2+N^2}\div \sqrt{M^2+N^2}timesM \sin Bt+N \cos Bt$

5. anonymous

I know I should also use the sum identity for the sine function. But, I'm stuck and have a blank on what to do next.

6. anonymous

t = -(1/B) cos^-1