Question 37

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Jambmaths question: 

If $\sin \theta =\tfrac{12}{13}$ find the value of $1+\cos \theta $

Option A: 

$\tfrac{18}{13}$

Option B: 

$\tfrac{8}{13}$

Option C: 

$\tfrac{5}{13}$

Option D: 

$\tfrac{25}{13}$

Jamb Maths Solution: 

$\begin{align}  & \sin \theta =\frac{12}{13},\text{ }\cos \theta =\frac{5}{13} \\ & 1+\cos \theta =1+\frac{5}{13}=\frac{18}{13} \\\end{align}$

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