Lim Enhui's answer to Arianne's Secondary 4 A Maths question.

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Lim Enhui
Lim Enhui's answer
1 answers (A Helpful Person)
I drew an extra dotted line above L which I labelled as QN. I labelled a few extra points; M is the point where L touches the long vertical line, O is the point whereby QO will be perpendicular to the line L, and T is the intersection between RM and QP. Angle QRM is equal to theta.