engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Trigonometry Multiple and Sub-multiple Angles
Evaluate , \(\rm \frac{\cos 7x\ +\ \cos 6x\ +\ \cos5x }{\sin 7x\ +\ \sin 6x\ +\ \sin 5x}\) .
1
tan 6x
2
tan 2x
3
cot 4x
4
cot 6x