Problem preview
G-SRT.6 Warmup M2-051-A09-V04

Define trigonometric ratios for acute angles using right-triangle similarity.

Find an acute angle from a special trigonometric ratio

Problem

Find the acute angle that satisfies this trigonometric equation: \(\cos(\theta)~=~\sqrt{2}/2\)

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Four variants of this problem type
Curriculum context
Course
Math II
Standard
G-SRT.6
Category
Geometry
Domain
Similarity, Right Triangles, and Trigonometry
Objective
Define trigonometric ratios for acute angles using right-triangle similarity.
Problem type
Find an acute angle from a special trigonometric ratio