Considering 0° < x < 180°, angle of cos x = -0.8726 is
A). 150.76°
B). 160.72°
C). 165.82°
D). 167.35°
1. If tan (2 θ + 45°) = cot 3 θ are acute angles, then the value of θ is
2. If secA = P, then the value of P is
3. The value of $\frac{cot30^{0} - cot75^{0}}{tan15^{0} - tan60^{0}}$ is:
4. A line passing through the origin perpendicularly cuts the line 2x + 3y = 6 at point M. Find M?
5. If \(0^\circ \le \theta \le 90^\circ \;and\;sinx + \sqrt 3 \;cosx = 1\) then the value of x -
7. ∆ABC is right angled at B. If m∠A = 30°, then find the value of (sinC + 1/3).
8. What is the value of$ Cot 60^{0} - Sec 30^{0}$?
9. ΔPQR is right angled at Q. If cot P = 5/12, then what is the value of tan R?