Trig Ratios

Objectives

• Students will explore sine, cosine, and tangent with respect to the ratios of the sides of right triangles.
• Students will use the TI-Nspire™ CX II to discover the relationship of these three trig functions.
• Students will solve any right triangle given an angle and the lengths of the opposite side, adjacent side or the hypotenuse.
• Students will try to make a connection with how to understand these topics in IB Mathematics courses and on their final assessments.

Vocabulary

• SOHCAHTOA
• sine, cosine, tangent
• adjacent
• opposite

About the lesson

Students will explore sine, cosine, and tangent with respect to the ratios of the sides of right triangles.