Math Problem Statement
You are told that sin (theta) = (9/sqrt(430)). If theta is in the first quadrant, then the exact value of cos(theta) is what? If theta is in the second quadrant then the exact value of cos(theta) is what?
Solution
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Pythagorean Identity
Quadrants
Formulas
Pythagorean identity: sin^2(theta) + cos^2(theta) = 1
Theorems
-
Suitable Grade Level
Grades 10-12
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