anonymous
  • anonymous
for tan = y/x what does it mean that x does not equal 0 and there is a restriction at 90 and 270?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
You can't divide by zero. What would computing the tangent of 90 mean (think of a right angled triangle) Same problem for 270 (= -90 degrees).
anonymous
  • anonymous
hmmm storta confused..
anonymous
  • anonymous
OK What's your calculator say for tan 89, tan 89.9, tan 89.99 etc

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anonymous
  • anonymous
57.28
TuringTest
  • TuringTest
...or how about what is the definition of \(\tan x\)
TuringTest
  • TuringTest
?
TuringTest
  • TuringTest
@HorribleAtMath Why run away? how does that help you
anonymous
  • anonymous
One definition is opposite/adjacent sides of a right hand triangle - draw a sketch.
anonymous
  • anonymous
i didn't run away. geese I'm on a different question. tan is y/x
TuringTest
  • TuringTest
I was going to say\[\tan x=\frac{\sin x}{\cos x}\]right?
anonymous
  • anonymous
except when cosx = 0
TuringTest
  • TuringTest
...that's what I'm getting at...
anonymous
  • anonymous
so like if i have sin 3x = 1/2
anonymous
  • anonymous
how do i do that
anonymous
  • anonymous
You say what angle has a sine of a half, and go from there.
anonymous
  • anonymous
for sin3x = 1/2 why is the answer pi/18 and 5pi/18 ?
anonymous
  • anonymous
You are using radians to measure angles.
anonymous
  • anonymous
can you just answer the question
anonymous
  • anonymous
if the sine of something = 1/2, something must be 30 degrees (or 120 degrees) or add a multiple of 360 degrees...
anonymous
  • anonymous
Correction; read 150, not 120.

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