MCQOPTIONS
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MCQOPTIONS
| 1. |
If secA + tanA = a, then the value of cosA is? |
| A. | $\frac{{{a^2} + 1}}{{2a}}$$ |
| B. | $\frac{{2a}}{{{a^2} + 1}}$$ |
| C. | $\frac{{{a^2} - 1}}{{2a}}$$ |
| D. | $\frac{{2a}}{{{a^2} - 1}}$$ |
| Answer» C. $\frac{{{a^2} - 1}}{{2a}}$$ | |