Length of the rope is 20 m and angle made by the rope with the ground level is 30°. Given: AC = 20 m and angle C = 30° To Find: Height of the pole Let AB be the vertical pole In right ΔABC, using sine formula sin 30° = AB/AC Using value of sin 30 degrees is 1/2 , we have 1/2 = AB/20 AB= 20/2 AB= 10 Therefore,the height of the pole is 10m.
