defence exam Indian Coast Guard Assistant Commandant (GD/CPL) 2025 Test Series Mathematics Trigonometry Multiple and Sub-multiple Angles
Direction: Consider a triangle ABC in which cos A + cos B + cos C = √3 sin \(\frac{\pi}{3}\)
What is the value of \(\cos \left(\frac{A+B}{2}\right)\cos \left(\frac{B+C}{2}\right) \cos \left(\frac{C+A}{2}\right)\)
1
1/4
2
1/2
3
1/16
4
None of these