due in 1 hour Solve cos(x)=0.73 on 0≤x<2π

Question

Solve  on 

There are two solutions, A and B, with A < B

A = 

  B =   

Give your answers accurate to 3 decimal places

Answer 1

Take the inverse cosine of both sides and you get an answer of 43.114 degrees. Cosine is positive in quadrant 1and 4 so your second angle will be 360 - 43.114= 316.886 so

A= 43.114 and B = 316.886