Chua Yong Qi's answer to .'s Secondary 4 E Maths Singapore question.
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for (a), since you know all angles and a length, you can use the sine rule to find XW
for (b), use the length found in (a) to find area by sine method, since angle is given also
for (c), use cosine rule, since you know all the lengths but not any angles
for (b), use the length found in (a) to find area by sine method, since angle is given also
for (c), use cosine rule, since you know all the lengths but not any angles
Date Posted:
3 years ago
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