Question

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Answer 1

DESARROLLO:

$E = \sin( \alpha ) - 2 \cot( \alpha ) + \cos( \alpha ) \\ E = \frac{4}{5} - 2( \frac{ - 3}{4} ) + \frac{ - 3}{5} \\ E = \frac{4}{5} + \frac{3}{2} - \frac{3}{5} \\ E = \frac{1}{5} + \frac{3}{2} \\ E = \frac{17}{10} \\ E = 1.7$

RESPUESTA:

C) 1,7