Back to Prove Laws of Sines and Cosines — Problem 5 · Task Set 23

Exercises: Prove the Laws of Sines and Cosines

Grade 10·21 problems·~35 min·Common Core Math - HS Geometry·standard·hsg-srt-d-10

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$Triangle ABC with angle A = 45 degrees, angle B = 30 degrees, and side a = 12, with side b to be found$

Triangle $ABC$ has angle $A = 45\degree$ , angle $B = 30\degree$ , and side $a = 12$ . Use $\sin(45\degree) \approx 0.707$ and $\sin(30\degree) = 0.5$ . Find side $b$ . Round to the nearest tenth.