A) \[\left( \frac{{{\alpha }^{2}}+{{\beta }^{2}}}{\alpha \beta } \right)t\]
B) \[\left( \frac{{{\alpha }^{2}}-{{\beta }^{2}}}{\alpha \beta } \right)t\]
C) \[\frac{(\alpha +\beta )}{\alpha \beta }t\]
D) \[\frac{\alpha \beta t}{\alpha +\beta }\]
Correct Answer: D
Solution :
[d] From the figure we have,You need to login to perform this action.
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