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Find the exact value of each expression without a calc.? cos(-π/6)sin(-π/4)-tanπ/4

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cos(-π/6)=-sqrt3/2 sin(-π/4)=-sqrt2/2
cos (-x)=cos(x) cos(pi/6)=sqrt3/2 sin(pi/4)=sqrt2/2 tan(pi/4)=1 now solve

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Other answers:

So i get the sol for the 3 equations separately and that's just my answer? Why are the eq stuck together then?
multiply them
hold on
sqrt 6/2?
so the answer is sqrt3/2 * (-sqrt2/2) -1
sqrt6 - 2/2?
that should be your answer!
Awesome, great thanks :)

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