Question

You want to erect a pole of height 10m with the support of three rops.each rope has to take an angle30 with the pole.what should be the length of the rope required

Answer 1

Answer:

answer is 60 m

Step-by-step explanation:

Angle(A)=30 degrees

we know that sinA=opp/hyp -->1

we also know that sin 30 = 1/2 -->2

therefore, length of one rope = 10 *2  (by equating 1 and 2 )

                                              = 20m

therefore length of all three ropes is 20 *3

which is 60 m