Pre-Cal

Find the exact value of sec 60°tan135°-cot60°sin60°

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  1. That can be calculated without a 'calculator' or trig tables.
    sec 60 = 1/cos 60 = 1/(1/2) = 2
    tan 135 = -tan 45 = -1
    cot 60 = tan 30 = 1/sqrt3
    sin 60 = (sqrt3)/2
    Do the calculation.

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