
If cosec + cot = 2, then cos =
If 4 = 0, then = ...........
If cos (A + B) = 0, cos B = then A =
If then = …………
If sin x = , then cosec x = ………
Given = 75°, = 30°, then tan (A-B) = ……………
Which one of the following is NOT defined?
...........
tan 36°. tan 54° + sin 30° = ………
If sin A = , then sec A = ………











