SOLUTION: How do you solve sin^2(x)+sinx=0

Algebra ->  Trigonometry-basics -> SOLUTION: How do you solve sin^2(x)+sinx=0       Log On


   



Question 869446: How do you solve sin^2(x)+sinx=0
Found 2 solutions by Fombitz, ewatrrr:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
sin%5E2%28x%29%2Bsinx=0+
sin%28x%29%28sin%28x%29%2B1%29=0
Two solutions:
sin%28x%29=0
x=0 and x=180
and
sin%28x%29%2B1=0
sin%28x%29=-1
x=270

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi
How do you solve
sin^2(x)+sinx=0 |Factor
sin(x)(sin(x) + 1) = 0
sin(x) = -1
sin(x) = 0
Reference the (cosx,sinx) summary Below: