Angles

In the triangle ABC, the ratio of angles is: a:b = 4: 5. The angle c is 36°. How big are the angles a, b?

Correct result:

a =  64
b =  80

Solution:

a=4/5•b
a+b+36 = 180

5a-4b = 0
a+b = 144

a = 64
b = 80

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Math Lover

Can you help me with this (The drawing will be provided. HINT. Use the difference of squares formula a- = (a - b)(a + b). Let AABC be a right-angled triangle with the right angle in A and base BC 50 •6 meters. Let AD be the beight correspond- ing to BC. II AB 30 •6 meters and BD= 18•6 meters, find: AC , DC, AD)

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