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Trigonometric Value table

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Knowledge Check

  • Calculate without using trigonometric tables:

    A
    `4 cos 20^(@)-sqrt(3)cot20^(@)`
    B
    `(2cos40^(@)-cos20^(@))/(sin20^(@))`
    C
    `cos^(6)(pi)/(16)+cos^(6)(3pi)/(16)+cos^(6)(5pi)/(16)+cos^(6)(7pi)/(16)`
    D
    `tan10^(@)-tan50^(@)+tan70^(@)`

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    Calculate without using trigonometric tables: (a) 4cos20^(@)-sqrt(3)cot20^(@)

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