Eric Nicholas K's answer to LockB's Secondary 3 A Maths Singapore question.
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The area of a triangle is given by the formula 1/2 x a x b x sin C where C is the included angle between the lengths a and b. In the special case where the included angle is 90, we get 1/2 x a x b which is the formula for a right angled triangle.
Date Posted:
3 years ago
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