Question #29edb

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Question #29edb

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Answer 1 · 2018-01-23T12:06:06

Here you go....

Explanation:

$sin x \cdot cos x = - \frac{1}{4}$ $sinx*cosx=-1/4$
Multiplying with 2 on both sides, we have:
$2 \cdot sin x \cdot cos x = 2 \cdot - \frac{1}{4}$ $2*sinx*cosx=2*-1/4$
or, $2 \cdot sin x \cdot cos x = - \frac{1}{2}$ $2*sinx*cosx=-1/2$
or, $sin 2 x = - \frac{1}{2}$ $sin2x=-1/2$
Thus, we can say:
$2 x = \frac{7 π}{2} or 2 x = \frac{11 π}{2}$ $2x=(7pi)/2 or 2x=(11pi)/2$
So, we have:
$x = \frac{7 π}{2} or x = \frac{11 π}{2}$ $x=(7pi)/2 or x=(11pi)/2$ as your answer.

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Question #29edb

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