Find cos 2α; the angle α is in the fourth quadrant, and sin α = -0.45. Which double-angle identity should you use? cos2α = 1 – 2〖sin〗^2α

sin(α)cos(α) - cos(α)sin(α)

sin(α)cos(α)

2sin(α)cos(α)

the answer is 3/5

step-by-step explanation:

first divide 24 divided by 8 because that is the least common multiple

then divide 40 by 8

then you will get 3/5.

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

56

step-by-step explanation: