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# C2 Help- Trig watch

1. Simplify, giving exact answers as a single fraction with rational denominator

a) sin2 pi/4 + tan pi/ 6

b) tan pi/6 + tan pi/3

c) sin45 +cos60
2. (Original post by ramshahk)
Simplify, giving exact answers as a single fraction with rational denominator

a) sin2 pi/4 + tan pi/ 6

b) tan pi/6 + tan pi/3

c) sin45 +cos60
Please tell us what you've tried and explain why you're stuck.

If you don't know the trig exact values (sin/cos/tan of 30, 45, 60 degrees) then you won't be able to do this without a calculator. I suppose you could use a calculator for e.g. tan(pi/3) but then do the simplifying yourself.

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Updated: February 9, 2017
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