If `A+B=90^(@)`, show that the maximum value of: `cos Acos B` is `(1)/(2)`.

If alpha+beta=90^@ , show that the maximum value of cos alpha cos beta is (1)/(2)

If alpha+beta=90^(0) ,show that the maximum value of cos alpha.cos beta is (1)/(2)

IF A+B=pi/2 , the maximum value of cos Acos B is

If in a Delta ABC,/_C=90^(@), then the maximum value of sin A sin B is

The maximum value of cos^(2)A+cos^(2)B-cos^(2)C, is

If A+B=90o and cos B=(3)/(5), what is the value of sin A?

The Maximum value of a sin theta+b cos theta is:

If alpha+beta=90^(0) ,then the minimum and maximum values of cos alpha*cos beta are (A) -1/3 and 1/3 (B) -1 and 1 (C) -1/4 and 1/4 (D) -1/2 and 1/2

If A + B=90^(@) and cos B=1//3 , then the value of sin A is A. 1/2 B. 1/4 C. 1/3 D. 2/3