Question

Find, correct to the nearest minute, all angles in the range 0 13 years ago

Answer 1

are you allowed to use calculator if so you can just put cos^-1(-0.5894)
and you will get your answer which is around 126.1 degrees

Answer 2

wait so what does it mean when they say to the nearest minute? since the answer is in degrees?

Answer 3

1 degree = 60min
so 127.1(60min) = 7626min
need someone to double check

Answer 4

cos^-1(-0.5894) = 126.1144419 degrees
Converting 0.1144419 to minutes:
0.1144419 * 60 = 6.8665 = 7 minutes to the nearest minute.
So one value of theta is 126 degrees 7 minutes.
This value lies in the second quadrant. Theta has another value in the third quadrant. Do you know how to find it?

Answer 5

im not too sure.

Answer 6

126 degrees 7minutes =180 degrees - (+theta)
(+theta) = 180 degrees - 126 degrees 7minutes = 53 degrees 53 minutes
The other value of theta is found from:
Theta = 180 degrees + 53 degrees 53 minutes = 233 degrees 53 minutes

Answer 7

Thnx a lot, I understand clearly now!

Answer 8

You're welcome :)