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Artemon [7]
2 years ago
11

Solve for x. ----------------------------------------------

Mathematics
1 answer:
almond37 [142]2 years ago
8 0
Answer:
x= 5
Why?
Look the pic, there is the explanation

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Solve for x in the given interval.<br><br> sec x= -2√3/3, for π/2 ≤x≤π
drek231 [11]

Answer:

b. x=\frac{5\pi}{6}

Step-by-step explanation:

The given function is

\sec x=-\frac{2\sqrt{3} }{3},\:\:for\:\:\frac{\pi}{2}\le x \le \pi

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This implies that;

\frac{1}{\cos x}=-\frac{2\sqrt{3} }{3}

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\Rightarrow \cos x=-\frac{\sqrt{3}}{2}

We take the inverse cosine of both sides to obtain;

x=\cos^{-1}(-\frac{\sqrt{3}}{2})

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3 years ago
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