in triangle abc angle b is equal to 90 degree angle is equal to 30 degree AC is equal to 10 cm what is the length of a b
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Draw a triangle abc
In which ac=10cm(given)
and angle acb=30
and abc = 90
Then,by trigonometry because abc is a right triangle
Sin30=ab/ac
1/2=ab/10
10/2=ab
Ab=5cm
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