If A lies in the second quad. and

3 tan A + 4 = 0, the value 2 cot A – 5

cos A + sin A is equals to-

If A + C = B, then tan A tan B tan C is-

If ABCD is a cyclic quadrilateral, then the

value of cos A – cos B + cos C – cos D-

The sign of the product sin 2 sin 3 sin 5 is -