Sahil A.

asked • 10/15/17

In triangle abc is angle a is 50 degree , b is 60 degree and c is 70 degree so find line bc

please tell me the answer its urgent its is fron triangle and i an not getting the answer so help

Mark M.

Well, I cannot get the answer either. The size of a triangle (how long the sides are) cannot be determined with only the angle measures given. 
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10/15/17

1 Expert Answer

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Raymond B. answered • 01/14/21

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bc is the side opposite angle a = 50 degrees. bc is the smallest side

it's in a ratio = bc/sin50 = ab/sin70 = ac/sin60 = 2ac/sqr3


unless you know one of the sides, all you can calculate is the ratio of the sides to each other


bc =2acsin50/sqr3 = absin50/sin70. you need to know either ac or ab to calculate bc

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