If is right-angled at C, then the value of cos (A + B) is
1. 0
2. 1
3.
4.
If a vector is inclined at angles, with x, y, and z-axis respectively, then the value of is equal to
1. 0
2. 1
3. 2
4.
What is the maximum value of 5sinθ – 12cosθ?
1. 12
2. 17
3. 7
4. 13
Which of the following is not possible?
1. sin θ = \(3\over5\)
2. sec θ = 100
3. cosec θ = 0.14
4. None of the above