Question

solve 6sinθ+5=0 for 0° ≤ θ < 360°

Answer 1

wouldn't 123.6 also be a minus like -56.4?

Answer 2

303.668 Degree and
236.443 degree are the two solutions. Try to justify that. I had some miscalculation before. Follow the same steps.

Answer 3

http://www.wolframalpha.com/input/?i=plot+%28+sin%28x%29%2C+-5%2F6%29++from+0+to+2Pi

Answer 4

so because you found the principal solution of 56.4, you added that to 180 , and then minus it from 360 to gain the two solutions because 180 and 360 is where the curve crosses on the sin graph. Thanks alot, this really helped:) ive had an epiphany! haha

Answer 5

YW