Question

sec A = 29/20, evaluate sin A - 1/tan A

Answer 1

Answer:    [-139/609]

Step-by-step explanation:

Given:

       sec A=29/20

Since,

       sin A= $\sqrt{1-1/secx^{2}$

       tan A= sin A / cos A

                = sin A. sec A

By solving,

sin A =  21/29  

tan A = 21/20  

By evaluating,

       = (21/29) - [1/(21/20)]

       = -139/609