If sec 2A =1/sin13A, determine the angle A in degrees.
A). 3°
B). 5°
C). 6°
D). 7°
The sine of a certain angle is 0.6, calculate the cotangent of the angle.
A). 3/4
B). 4/3
C). 4/5
D). 5/4
Find the value of sin (arc cos15/17)
A). 8/11
B). 8/15
C). 8/17
D). 8/19
If cos 65° + cos 55° = cos θ, find θ in radians
A). 0.087
B). 0.765
C). 1.213
D). 1.421
Find the value of A between 270° and 360° if sin^2 A – sin A = 1
A). 300°
B). 310°
C). 320°
D). 330°