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given that 0 is less then or equal to theta and theta is less then or equal to pi. ans cos theta = 2/squar root of 7. Find sin theta

  • trig -

    cosθ = 2/√7 and 0 <= θ <= π means we are in the 1st quadrant.

    so, sinθ = √(7-4)/√7 = √(3/7)

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