Given that sinx= 1/2, cosx= (rt.3)/2 and 0 degrees less than or equalxless than or equal 360 degrees,

a) Find the values ofx

b) write down the exact value of tanx.

My solution is...

a)x= 30, 150, 330

but the book only says that 30 degrees is the solution... am I right? or is the book right?

b) I have two exact values for tanx: 1/(rt.3) and -1/(rt.3)

but the book has it down as: (rt.3)/3

Are my answers correct?