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A kite is 30m from the ground. A cyclist observes it flying when he looks up at an angle of 20°. After 15 seconds, the cyclist has to look up at an angle of 60° to see the kite. Calculate the speed of the cyclist. Give your answer in km/h.

 

I'm very stuck!

 Aug 25, 2020
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Find horizontal distance when 20 degrees

tan 20 = 30/d1

 

then find horizontal distance 15 seconds later

 

tan 60 = 30/d2

 

d1-d2 = km distance in 15 seconds....convert to Hours....to calculate  km/hr

 Aug 25, 2020

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