Page 53 - Math 9-10 (2009)
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52 THE ONTARIO CURRICULUM, GRADES 9 AND 10: MATHEMATICS
cosine ratio [student reproduction of the development of the formula is not required]);
– determine the measures of sides and angles in acute triangles, using the sine law and the cosine law (Sample problem: In trian- gleABC, A = 35°, B = 65°,and
AC = 18 cm. Determine BC. Check your result using dynamic geometry software.);
– solve problems involving the measures of sides and angles in acute triangles.
