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March 25, 2017

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How do you find the exact value of:
4sin 60degrees - 3tan 135degrees

  • Math - ,

    You should know the trig ratios of the 30-60-90 and the 45-45-90 right-angled triangles

    sin 60° = √3/2
    so 4sin60° = 4(√3/2) = 2√3

    tan 135° = -tan 45° = -1

    now put it all together to get
    2√3 + 3

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