Alfred565
  • Alfred565
What is the sine of a 30° angle?
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
you need a nice trig cheat sheet
anonymous
  • anonymous
find the coordinates of the point corresponding to the 30 degree angle the first coordinate is cosine, the second coordinate is sine
Alfred565
  • Alfred565
so, 3/2?

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

Alfred565
  • Alfred565
@satellite73 and why is the 30 and 60 the same? is it 1/2 or 2/3?
Alfred565
  • Alfred565
3/2*
UsukiDoll
  • UsukiDoll
my professor told me that to find sin30 we have to look at the 30 degree angle.. and use opposite/ hypotenuse
UsukiDoll
  • UsukiDoll
|dw:1434591073159:dw| this is a standard 30 degree and 60 degree triangle
UsukiDoll
  • UsukiDoll
so to look for sin 30 I have to go opposite/hypotenuse so it's like drawing a line from the 1 first and then to the 2 |dw:1434591150637:dw|
UsukiDoll
  • UsukiDoll
sin x = opposite/hypotenuse so my opposite value is 1 and my hypotenuse is 2.. so sin 30 = 1/2
UsukiDoll
  • UsukiDoll
but to go for 60 degrees I have to START at the 60 degree angle.
UsukiDoll
  • UsukiDoll
|dw:1434591242435:dw|
UsukiDoll
  • UsukiDoll
|dw:1434591275310:dw| so opposite/hypotenuse for 60 degrees is \[\frac{\sqrt{3}}{2}\]
UsukiDoll
  • UsukiDoll
the value for triangle is the same but you have to go in a different direction if you want sin 60
anonymous
  • anonymous
Just a head up. I would learn the Unit circle. It will come in handy later on in your studies.
UsukiDoll
  • UsukiDoll
luckily for 45 degrees it's easier
UsukiDoll
  • UsukiDoll
because 45 degrees is everywhere... and the values are the same.. except tan 45 is always 1
UsukiDoll
  • UsukiDoll
|dw:1434591444328:dw|
UsukiDoll
  • UsukiDoll
you need to memorize these triangles... they are super useful for calculus....especially when you're not allowed to use a calculator in exams.

Looking for something else?

Not the answer you are looking for? Search for more explanations.