Question

Let α be an angle such that sin α + $\frac{4}{5}$ .
a) Find sin 2α when cos α > 0.
b) Find sin 2α when cos α < 0.
c) Find cos 2α when cos α > 0.
d) Find cos 2α when cos α < 0.
e) Find all possible value(s) of sin 3α.
f) Find all possible value(s) of cos 3α.

Answer 1

Answer:

idk

Step-by-step explanation: