Find the solutions for 075sinx 075sin5x 1cos7x 1cos5xSolutio

Find the solutions for

0.75=sinx

0.75=sin(5x)

-1=cos(7x)

-1=cos(5x)

Solution

1) sin x = 0.75

x = sin^-1(0.75)

x = 48,59 degree

2) sin 5x = 0.75

5x = sin^-1(0.75)

5x = 48.59

x = 9.718 degree

3) cos 7x = -1

7x = cos^-1(-1)

7x = 180 degree

x = 25.71 degree

4) cos 5x = -1

5x = cos^-1(-1)

5x = 180

x = 36 degree