In a triangle, sum of three angles is always 180 deg
Thus, here F measures 180-(120+30) = 30 deg.
Hope you got it. :)
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standard deviation is the best measure of dispersion because.. a)It measure the absolute dispersion b)It is most frequentlyused as prossesses almost all the the qualities that a good measure of variation have. c)It is beased on all observation. d)It is rigidly defined. e)It is capable of further algebraic treatment. f)It is least affected by the fluctuation of sampling.
No, it is not an f, unless that is how f is defined.
The most appropriate unit to measure the volume of water in a swimming pool is cubic meters (m³) or cubic feet (ft³). This unit accounts for the three-dimensional space occupied by the water in the pool. It is important to use cubic units to accurately measure the total amount of water present in the pool.
Suppose you wish to differentiate x/f(x) where f(x) is a differentiable function of x, and writing f for f(x) and f'(x) for the derivative of f(x), d/dx (x/f) = [f - x*f']/(f2)