If 90o<A<180o and sinA=45, then tanA/2 is equal to
Since 90° < A < 180°, A lies in the second quadrant. In the second quadrant, the values of sine and tangent are positive. However, sin A = 45 = sqrt(2)/2, which is less than 1. Therefore, there is an error in the given information.
If sin A = 45° (which is not possible because the maximum value of sin A is 1), we can consider solving for A using the inverse sine function:
A = sin^(-1)(45°)
Using a calculator, we find that this expression is not valid since the value of sine cannot be 45. Thus, we cannot determine the value of tan(A/2).
In conclusion, without valid information about A, we cannot calculate the value of tan(A/2).