May Min's answer to Ryani Nursyazwany's Secondary 4 E Maths question.
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Use area of vector triangle = 1/2 |one of the sides||the other side| sin(angle), take note that i could cancel sin(angle) and sin(180-angle) out because sin(angle) = sin(180-angle) -> this is under the trigo rules
Date Posted:
7 years ago
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