MCQOPTIONS
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MCQOPTIONS
| 1. |
If tan A + sin A = m and tan A - sin A = n then: |
| A. | m2 + n2 = 2mn |
| B. | m2 + n2 = mn |
| C. | \(m^2 - n^2 =4 \sqrt {mn}\) |
| D. | \(m^2 - n^2 = \sqrt {mn}\) |
| Answer» D. \(m^2 - n^2 = \sqrt {mn}\) | |