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January 30, 2015

January 30, 2015

Posted by **Liza** on Monday, January 11, 2010 at 3:11pm.

- Physics -
**drwls**, Monday, January 11, 2010 at 5:26pmUse the law of cosines.

c^2 = a^2 + b^2 - 2ab cos C

6.1^2 = 3.2^2 + 5.7^2 - 2*3.2*5.7 cos C

cos C = (10.24 + 32.49 - 37.21)/36.84

= 0.1498

Solve for C and verify my numbers.

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