Chua Yong Qi's answer to putri's Secondary 3 E Maths Singapore question.
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for (a), use cosine rule, since you know the angle opposite PR, as well as the length of the other 2 sides.
for (b), use sine rule, since you know the length of the side opposite angle PRQ, as well as another length and angle.
for (c), notice that PRM is a right-angled triangle, so just find angle PRM and use sine to find RM, then h.
for (b), use sine rule, since you know the length of the side opposite angle PRQ, as well as another length and angle.
for (c), notice that PRM is a right-angled triangle, so just find angle PRM and use sine to find RM, then h.
Date Posted:
4 years ago
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