Question 27

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Jambmaths question: 

From the figure above, what is the value of p

Option A: 

60o

Option B: 

45o

Option C: 

125o

Option D: 

90o

Jamb Maths Solution: 

$\begin{align}  & q={{30}^{\circ }}\text{    }\!\!\{\!\!\text{ vertically opposite angles }\!\!\}\!\!\text{ } \\ & {{30}^{\circ }}+{{(p+2q)}^{\circ }}={{180}^{\circ }}\text{ }\!\!\{\!\!\text{ sum of }\angle s\text{ on a straight line }\!\!\}\!\!\text{ } \\ & {{30}^{\circ }}+p+2({{30}^{\circ }})={{180}^{\circ }} \\ & p={{90}^{\circ }} \\\end{align}$

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