Calculating Angles with Trig Functions

Calculating Angles with Trig Functions

10th Grade · Math · 45 min

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Learning Objective

I can calculate the measure of an angle in a right triangle using sine, cosine, or tangent.

  • 1

    Trigonometry is the study of the ratios of sides of triangles.

  • 2

    The mnemonic SOH CAH TOA is helpful for remembering that Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, and Tangent = Opposite/Adjacent.

  • 3

    The hypotenuse is the side opposite the right angle in a right triangle and is always the longest side.