Documentary evidence is dealt with under which chapter

Sec A -Tan A = 1/16 then find the value of cot A =?

The maximum value of 45 sin θ + 28 cos θ is:

If 4sin² θ = 3(1+ cos θ), 0° < θ < 90°, then what is the value of (2tan θ + 4sinθ - secθ)?

What is the value of cos [(180 – θ)/2] cos [(180 – 9θ)/2] + sin [(180 – 3θ)/2] sin [(180 – 13θ)/2]?

If x tan 60° + cos 45° = sec 45° then the value of x² + 1 is

If 7sin²θ + 3cos²θ = 4, then find the value of θ?

Solve for x in the interval [0, 2π]: 2 sin²x + 3 sinx - 2 = 0.

The minimum value of 77 sin θ + 36cosθ is