Back to Explain sine and cosine relationship — Problem 1 · Task Set 20

Exercises: Sine and Cosine of Complementary Angles

Grade 9·20 problems·~28 min·Common Core Math - HS Geometry·standard·hsg-srt-c-7

Work through problems with immediate feedback

Fluency Practice

$Right triangle ABC with right angle at C, angle A labeled 47 degrees, and angle B unknown$

In right triangle $ABC$ with right angle at $C$ , if $\angle A = 47\degree$ , then $\angle B = \underline{\hspace{5em}}\degree$ . The two acute angles are ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ angles.

measure of angle B:

relationship type: