How to find exact values of circular functions?

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Can someone please explain how to do question 1g? Thanks!

1 Answer
Nov 9, 2017

See below.

Explanation:

For 1g.

Notice that 420o is one complete revolution plus 60o. So we are really only looking for the sin cos and tan of 60o

sin(60o)=32

cos(60o)=12

tan(60o)=3