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Trigonometry
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OpenStudy (anonymous):
Solve right angle triangle ABC using the diagram and the given measurements A = 21 degrees and c (hypotenuse is equal to 8
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OpenStudy (stacey):
\[\sin 21^{o}=\frac{ a }{ 8 }\] Solve this for a and then the Pythagorean Theorem to find b. Since it is a right triangle, 90 + A + B = 180. We know A, so we can solve for B.
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