If cos 55° and sin 55° = 0.8 each then answer of cos 125° + 5 sin 55° is
A). 0.8
B). 2.4
C). 2.8
D). 3.2
2. One degree on the equator of the earth is equivalent to _____ in time.
4. If x2 = sin230° + 4cot245° - sec260°, then the value of x (x > 0) is
5. If $sin\theta + cos\theta$ = $\sqrt{2}cos\theta $, then the value of $cot\theta$ is
6. If 2secA - $\frac{(1+sinA)}{cosA}$ = x, then the value of x is
7. The height of a wall is 50√3 m. The angle of elevation of wall from a distance 50 m from its feet is
8. If $5 cos\theta + 12 sin\theta$ = 13, $0^{0} < 0 < 90^{0}$ , then the value of $sin\theta$ is
9. Solve for angle C of the oblique spherical triangle ABC given, a = 80°, c = 115° and A = 72°