What is the size of angle x in the diagram
MATHEMATICS
WAEC 2003
What is the size of angle x in the diagram
- A. 15°
- B. 30°
- C. 45°
- D. 60°
Correct Answer: B. 30°
Explanation
\(Sin\theta^{\circ} = \frac{opp}{hyp}\\
Sin X^{\circ}=\frac{5}{10}=0.5000\\SinX^{\circ}\\
X^{\circ} = sin^{-1}0.5000\\
X^{\circ}=30^{\circ}\)
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