show the steps in transforming the expression on the left into the one on the right: 1. (secA) / (sinA) -…

show the steps in transforming the expression on the left into the one on the right: 1. (secA) / (sinA) – (sinA) / (cosA) to cotA 2. (cscB) / (cosB) – (cosB) / (sinB) to tanB 3. 1 / (1 – cosX) + 1 / (1 + cosX) to 2csc^2X 4. 1 / (secD – tanD) + 1 / (secD + tanD) to 2secD