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3 years ago

12

Solve on the interval 0,2pi) 2cscx-3=-5

1 answer:

nydimaria [60]3 years ago

4 0

We have that

<span>2cscx-3=-5---------> 2cscx=-5+3---------> cscx=-2/2---------> cscx=-1

we know that
csc x=1/sin x
then
1/sin x=-1--------------> sin x=-1
x=arcsin (-1)---------> x=-90</span>°
x=-90°---------------> 360°-90°-----------> x=270°------------> 3pi/2<span>

the answer is
x=3pi/2 radians

</span>

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