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    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
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    (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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