Trigonometry! #152

Geometry Level 4

If the three sides of Δ A B C \Delta ABC , a a , b b and c c are in AP, then find the value of cot ⁡ A 2 cot ⁡ C 2 \cot\frac{A}{2}\cot\frac{C}{2} .

This problem is part of the set Trigonometry .


The answer is 3.

Omkar Kulkarni by Omkar Kulkarni , 22, India

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1 solution

Rohit Ner
Feb 27, 2015

4 Helpful 0 Interesting 0 Brilliant 0 Confused

A more easy way is to use half angle formula and substituting the value of s s in terms of b b .

Kislay Raj - 6 years, 3 months ago

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Can you please post your method

Abhijeet Verma - 5 years, 11 months ago

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