MCQ
A pole $10m$ high cast a shadow $10m$ long on the ground, then the sun's elevation is :
- A$60^\circ$
- ✓$45^\circ$
- C$30^\circ$
- D$90^\circ$
✓
Answer
Correct option: B.
$45^\circ$
In $\triangle BAC,$
$\Rightarrow \text{tan} \theta = \frac{\text{AB}}{\text{BC}} =\frac{10}{10} = 1$
$\Rightarrow \theta = 45^\circ$
Hence, the answer is $45^\circ$ .
$\Rightarrow \text{tan} \theta = \frac{\text{AB}}{\text{BC}} =\frac{10}{10} = 1$
$\Rightarrow \theta = 45^\circ$
Hence, the answer is $45^\circ$ .
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