Question

2 SIMPLE TRIG PROBLEMS, I NEED HELP, HAVE BEEN LOOKING FOR HELP FOR ABOUT 3 HOURS!

Answer 1

@Hero @pooja195

Answer 2

What do you think it is

Answer 3

hint:
the first graph is a branch of a standard trigonometric function,
whereas the second graph is related to this function:

\[\Large y = 10\cos \left( {x + \alpha } \right)\]
here, using the points which you provided, you have to establish the exact value of the constant \[\Large \alpha \]