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Trigonometry questions and answers.
Member rating: No Rating | Words: | Submitted: Mon Sep 22 2003
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Project 3 Trigonometry By David Timan For Mr. Orr's grade 11 U Math Class January 6, 2003 1. Find the length of the missing side in (WXY to one decimal place. Cosine law: c2 = a2 + b2 - 2ab cos C c = a2 + b2 - 2ab cos C c = 212 + 242 - 2(21)24 cos 40° c = 441 + 576 - 1008 (0.766044) c = 441 + 576 - 772.173 c = 244.827 c = 15.647 ( The missing side is 15.6 cm long. 2. Find (F to one decimal place. Cosine law: c2 = a2 + b2 - 2ab cos C 282 = 322 + 302 - 2(32)30 cos C 784 = 1024 + 900 - 1920 cos C 1920 cos C = 1024 + 900 - 784 1920 cos C = 1140 cos C = 1140 / 1920 C = cos-1 .593750 C = 53.6° ( (F is 53.6°. 3. In (ABC, a = 63cm, c = 47cm, and (C = 38.4°. Find...
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