Episode 14 — Trigonometry

Finding an Unknown Angle in a Right-Angled Triangle

Learners will be able to:

• Identify the unknown angle in a right-angled triangle as alpha. • Calculate the length of PS using the tangent ratio and the given values for PQ and the angle 40 degrees. • Substitute the calculated value of PS into the equation tan(alpha) = PS / 16. • Use the inverse operation of the tangent function to find the measure of alpha in degrees.