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Let me try.  By the way, is this e-maths?  I don’t like e-maths… 

tan 70 = h/a

tan 55 = h/b

=> a tan 70 = b tan 55

(1) 2.75a – 1.43b = 0

Now, a + b = 30

(2) 1.43a + 1.43b = 42.84

 

(1)+(2): 4.18a = 42.84

a = 10.25

 

Therefore h = a tan 70 = 28.16

 

So height of kite from ground

= 1.55+28.16

= 29.71

= 29.7 (to 1 decimal place)

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thank you!! Hahaha its not e-maths, its just one math subject i take in sec2

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