G-SRT.3.7

Explain and use the relationship between the sine and cosine of complementary angles.

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Students are asked to use 30-60-90 triangle relationships to observe and explain the relationship between sin 30 and cos 60 (or sin 60 and cos 30).
Patterns in the 30-60-90 Table
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Students are given the sine and cosine of angle measures and asked to identify the sine and cosine of their complements.
Right Triangle Relationships
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Students are asked to explain the relationship between sine and cosine of the acute angles of a right triangle.
Sine and Cosine
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The goal of this task is to provide a geometric explanation for the relationship between the sine and cosine of acute angles.
Sine and Cosine of Complementary Angles
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The goal of this task is to explore the relationship between sine and cosine of complementary angles for special benchmark angles.
Trigonometric Function Values
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