A) \[3.90m\]
B) \[4.00m\]
C) \[4.10m\]
D) \[4.25m\]
Correct Answer: C
Solution :
[c] as \[\angle CPA=45{}^\circ \] |
so \[AC=AP=x+3\] |
\[\tan 30{}^\circ =\frac{AB}{AP}=\frac{x}{x+3}\] |
\[\frac{1}{\sqrt{3}}=\frac{x}{x+3}\] |
\[x+3=\sqrt{3}x\] |
\[x=\frac{3}{\sqrt{3}-1}\times \frac{(\sqrt{3}+1)}{(\sqrt{3}+1)}\] |
\[x=\frac{3\times 2.73}{2}=\frac{8.19}{2}=4.095m\approx 4.1m\] |
You need to login to perform this action.
You will be redirected in
3 sec