Question

Is this statement true? sin(240)=4sin(60)

Answer 1

the angle 240 degrees is in quadrant III

so sin(240) is negative (sine is negative in quadrants III and IV)

Answer 2

but sin(60) is positive since 60 is in quadrant I

Answer 3

So the left side is negative, the right side is positive. There's no way the two sides are equal.

Answer 4

@Light&Happiness : I believe I told you earlier that OpenStudy's Code of Conduct and underlying philosophy are that neither helpers nor questioners should simply give out answers. Ask questions, give guidance, reflect on what the questioner says, but do NOT give away the answer to his or her question.

Answer 5

thanks, @jim_thompson5910 :)