Question

If y= 4 sin pi t + 5 cos pi t, then maximum value of y will be? Please reply soon . It's urgent...

Answer 1

the value of y = a cosc + b sin x lies between  - $\sqrt{a^{2} + b^{2}$ and $\sqrt{a^{2} + b^{2} }$

so, the max value of this equation is $\sqrt{ 4^{2} + 5^{2} }$ = 41