Life 2 years ago A solution set of the equation 5sin(theta) +3=3 contains all multiples of... i know that the answer is 180, but im not sure how to get it

1. nubeer

5sinx +3 =3 5sinx = 0 sinx = 0 do you know about the sin wave?

2. Life

yea, starts at 0 and goes down

3. Life

why does this have to do with the sin wave

4. nubeer

|dw:1353003868370:dw|

5. nubeer

this is sin wave.. look at which angles the value of sin is 0?

6. Life

im lost

7. Life

isn't that cos wave?

8. nubeer

hmm at what part.. just look at the curve.. just on x=axis line on which angle the value is 0?

9. nubeer

nop.. its not cos.. its sin.

10. Life

ohhhh 180

11. nubeer

|dw:1353004137130:dw| this one is cos

12. Life

and 360

13. nubeer

yes and at 0 angle too.

14. Life

yea 0 as well, so what does that mean

15. nubeer

well all 3 are possibilities.. and it depends on the range in question.. if not stated then all 3 can be answer.

16. Life

there are choices, 90, 135, 45, and 180, so its 180 right?

17. nubeer

yes 180 then.

18. Life

thanks!