Question

Q(1).A ladder 15m long makes an angle of 60degree with a wall find it height of the point it touch a wall ? ​

Answer 1

suppose ladder is the hypotenuse of triangle = h = 15 m

Height of point on wall = perpendicular = p

$\frac{p}{h} = \sin(60) \\ \\ \frac{p}{15} = \frac{ \sqrt{3} }{2} \\ \\ p = \frac{15 \sqrt{3} }{2} = 3(5 \sqrt{3} \div 2$

Height of point = 13 m approximately