Q7 of 87 Page 10

If the sides of a triangle are proportional to 2, √6 and √3 – 1, find the measure of its greatest angle.


Lets say


a = 2x, b=√6x and c=(√3-1)x


where x is any constant


Now by putting cosine law


By Cosine law,








Putting Cosine law for B,








Putting Cosine law for C,








So, The largest Angle is 120° i.e. ∠B


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