In triangle ABC we have \(\angle C = 3\angle A\), a=27 and c=48 What is b? Note: a is the side length opposite A etc.
By the cosine law, b = 35.
I used sine rule followed by trig identities to get the value of sin
Then I used cosine rule to find the answer.
It was not an easy question.
I did not check my working but I also got an approx answer of 35.001.