sin(3theta) = -1 find the solution set.

I only got the first radian right. which was (pie/2)

Question

sin(3theta) = -1 find the solution set. 

I only got the first radian right. which was (pie/2)

dumbcow · Answer

sin = -1 when angle is 3pi/2 plus multiples of 2pi

3pi/2 + 2pi = 7pi/2    --->theta = 7pi/6

anonymous · Answer

$$\text{lets see   begin with breaking this up.}\sin(3\theta)=sin(\theta +2\theta) \sin(A+B)=sinAcosA+sinAcosB \ proceed--->try $$

anonymous · Answer

and dumbcow how did you get that method of doing multiples of 2

dumbcow · Answer

i dont think mebs method applies to your problem

dumbcow · Answer

yes keep adding 2pi to get more solutions

anonymous · Answer

yea i  noticed . it doesnt

anonymous · Answer

but where did you get 2pie from. ?

dumbcow · Answer

thats the num of radians in a circle

anonymous · Answer

hmmm... it is to tedious don't bother I was thinking of something else.

anonymous · Answer

its alright mebs. And dumbcow thanks I figured it out.