Right Triangle Trigonometry

A right triangle has:

• one right angle and 2 acute angles

Basics of Right Triangle Trig

• In mathematics, we often use Greek letters to label angles.

• In this example, the Greek letters “alpha” and “beta” are used.

• By the end of today’s lesson, you will be able to find the mistake in this picture!

Theta

• Along with alpha and beta, the Greek letter theta is used to denote the angle in question.

• Theta looks like a 0 with a line through the center,

Mnemonic to Memorize

• We use SOH-CAH-TOA to help us to remember the basic trigonometric ratios:

• Below you can see part of its usefulness!

Real Life Examples

• Right triangle trigonometry is useful to help solve real life problems.

• The following are all examples of real life problems.

We can use trigonometry to find out the height of the kite!

Oceanography

Angle of Elevation

• Angle of Elevation is used in many real life right triangle trigonometry problems.

Calculator

• We can use our calculators to help solve trigonometry problems