(Solved): Solve 7sin((\pi )/(5)x)=4 for the four smallest positive solutions x=Solve 4cos(2x)=3 for the smalle ...

Solve

for the four smallest positive solutions

Solve

for the smallest positive solution. Give your answer accurate to at least two decimal places. The curve above is the graph of a sinusoidal function. It goes through the points

and

. Find a sinusoidal function that matches the given graph. If needed, you can enter

as 'pi' in your answer, otherwise use at least 3 decimal digits.