A communication cable is stretched from the top of a vertical pole to a point on the…
MATHEMATICS · Multi-part · GCSE · Mathematics · Geometry and Measures · Geometry and Measures
Problem
A communication cable is stretched from the top of a vertical pole to a point on the ground 40 m from the pole’s foot. The cable makes an angle of 60∘ with the level ground.
(i) Show that the length of the cable is cos60∘40 metres.
(ii) Determine the height of the pole.
(iii) If the cable costs Rs 150 per metre, calculate the total cost of the cable, correct to the nearest rupee.