# Trigonometer: Calculate sine (sin) and cosine (cos) with manipulatives!

Created by
jjerickson

Easy print-and-cut-out resources. Recommend that you use card-stock. See attached directions for a example problem that it can be used for. Cut out the triangles at the bottom of the page first!

This is a great resource for when you first introduce the unit circle and sign and cosine. By cutting out the triangles and placing them appropriately on the unit circle students can "see" the values trigonometric (trig) functions of common values such as 30 degrees, pi/4, etc. Students get very engaged using this tool, and really "internalize" rather than just "memorize" these important facts and concepts.

Alignment to:
Precalculus, Precalc, Trigonometry, Trig, Ratios, CCSS
CCSS.MATH.CONTENT.HSF.TF.A.1, CCSS.MATH.CONTENT.HSF.TF.A.2, CCSS.MATH.CONTENT.HSF.TF.A.3, CCSS.MATH.CONTENT.HSF.TF.A.4, CCSS.MATH.CONTENT.HSF.TF.B.5, CCSS.MATH.CONTENT.HSF.TF.B.6, CCSS.MATH.CONTENT.HSF.TF.B.7, CCSS.MATH.CONTENT.HSF.TF.C.8, CCSS.MATH.CONTENT.HSF.TF.C.9

\$2.00
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### Info

Created: Sep 10, 2015

Updated: Feb 22, 2018

#### Resource for Centers

pdf, 92 KB

Trigonometer-Instructions

#### Resource for Centers

pdf, 40 KB

Trigonometer-Print-out

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