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For acute angle Aof a right triangle, find tan A by using the 45-45-90 Triangle Theorem or the 30-60-90 Triangle Theorem.

measure of angle A=45 degrees.

  • Geometry/Trig. -

    angle A = 45 deg

    Special 45-45-90 deg triangles have sides in the
    ratio of 1:1:(sqrt(2)) OR
    ratio n : n : n(sqrt(2))

    This means, in this problem,
    side a = 1 (opposite side)
    side b = 1 (adjacent side)
    side c = 1*(sqrt(2)) (hypotenuse)

    tan A = a/b = op/adj
    tan 45 = ?

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