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A ladder of length 3.5 m just reaches the top of a wall. If the ladder makes an angle of 60° with the wall, then what is the height of the wall (in m)? |
1.75 $3.5\sqrt{3}$ $\frac{7\sqrt{3}}{4}$ $\frac{3.5}{\sqrt{3}}$ |
1.75 |
⇒ cos\({60}^\circ\) = \(\frac{QT}{3.5}\) ⇒ \(\frac{1}{2}\) = \(\frac{QT}{3.5}\) ⇒ QT = \(\frac{3.5}{2}\) ⇒ QT = 1.75m Therefore, height of the wall is 1.75m. |
