Solve the equation on the interval 0 lessthanorequalto theta

Solve the equation on the interval 0 lessthanorequalto theta

Solution

32. cos theta - 1=0

cos theta=1

theta=cos^-11 = 0

33. sin(4 theta)= (sqrt3)/2

4 theta= sin^-1(sqrt3)/2

4theta= pi/3, 2pi/3, 7pi/3, 8pi/3, 13pi/3, 14pi/3, 19pi/3,20pi/3

theta= pi/12, pi/6, 7pi/12, 2pi/3, 13pi/3, 7pi/6, 19pi/12, 5pi/3