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Trigonometric ratios, step by step

Before the calculator comes the definition.

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The question
94041A tan A =

tan A

Write tan A as a fraction

tan A=opposite / adjacent
tan A=9/40
tan A=9/40
  1. tan A is opposite over adjacent. Name the two sides you need, measured from angle A.
  2. Read them off the triangle: the opposite side of angle A is 9, the adjacent is 40.
  3. So tan A = 9/40.

How it works.

  1. 01

    tan A is opposite over adjacent. Name the two sides you need, measured from angle A.

  2. 02

    Read them off the triangle: the opposite side of angle A is 9, the adjacent is 40.

  3. 03

    So tan A = 9/40.

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