Question
Please help me solve
sin3x=cos(5x+10°)
sin3x=cos(5x+10°)
Answers
oobleck
since sin(x) = cos(90-x), you have
sin3x = sin(80-5x)
3x = 80-5x
x = 10
and sure enough, sin30° = cos60°
sin3x = sin(80-5x)
3x = 80-5x
x = 10
and sure enough, sin30° = cos60°