Question

How to solve for t?

For some reason im derping out and I'm forgetting how to deal with the cosine

0.090 = 0.180cos(0.989(t))

Answer 1

arccos or cos^-1 on your calculator

Answer 2

0.090 = 0.180cos(0.989(t))
0.090/0.180=cos(0.989t)
arccos(0.090/0.180) =0.989 t

Answer 3

Oh alright! i did that earlier but got the wrong answer. I must have plugged in the wrong numbers. thanks.

Answer 4

remember to use radians in this case

Answer 5

that might have bveen the problem because i think i left my calculator on degrees lol. thanks!

Answer 6

sure np :)