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If in a ∆ABC, ∠A = 45o, ∠B = 60o, and ∠C = 75o; find the ratio of its sides.

according to sine rule,

RD Sharma Solutions for Class 11 Maths Chapter 10 – Sine and Cosine Formulae and their Applications image - 1

\[a:\text{ }b:\text{ }c\text{ }=\text{ }2:\text{ }\surd 6:\text{ }\left( 1+\surd 3 \right)\]

Therefore,

the ratio of the sides of the given triangle is:

\[~a:\text{ }b:\text{ }c\text{ }=\text{ }2:\text{ }\surd 6:\text{ }\left( 1+\surd 3 \right)\]