calculate the length of the third side of an issoceles triangle whose apex angle is 42 degrees and whole equal sides are 12.3 cm long
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let equal side be X and other side y
now, length of y= 2x sin teta/2
=12.3×sin42/2
=12.3 × sin21
=4.407
now, length of y= 2x sin teta/2
=12.3×sin42/2
=12.3 × sin21
=4.407
Chandyy1607:
I'm sorry but the answer is 8.81. I dont know how to get it tho
Could you plz work it back
its okk
problem is that l did not multiply 12.3 by 2 as that of formula
if we multiply the answer by 2 ,it will 8.81
now, it is a right answer
thanks for telling the original answer
thank you
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