pre calc

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evaluate the trigonometric function of the given quadrantal angle.

tan 1440°


Evaluate without using ratios in reference triangle.

sec 3π/4

  • pre calc -

    tan 1440° = tan 1440-4(360) = tan 1440-1440 = tan 0° = 0

    sec 3π/4 = -sec π/4 = -√2

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