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how would you verify this trig identity

(1+cos(x) / 1-cos(x)) - (1-cos(x) / 1+cos(x)) = 4cot(x)csc(x)


help please!

  • trig -

    get a common denominator on the left side and combine the two terms. Remember that 1-cos^2 x = sin^2 x

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