Question

Find the value of the following using the concepts of both addition and subtraction formulas and reference angle:

sin 255

Answer 1

@MonoPolyRoly

Answer 2

255 = 180 + ...?

Answer 3

75

Answer 4

So, you have sin(255) = sin(180+75)
sin(180+x) = -sin(x)
So, what would you get?

Answer 5

how'd you do that????

Answer 6

sin(180+75) = -sin(75)

Answer 7

okay

but i dont see any sin 75 in the graph

Answer 8

75 = 45+...?

Answer 9

nice @MonoPolyRoly !!! good luck !

Answer 10

45+75=75
@MonoPolyRoly
what next?

Answer 11

I am sure that 45+75 is not 75.
If you find the correct answer for 75 = 45 + __, then you can apply the addition formula.