Ammarah
  • Ammarah
Use the sum/difference identities to solve using the given information. Given sinx=rad 2/5, where pi/2
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.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Ammarah
  • Ammarah
@tkhunny
tkhunny
  • tkhunny
Have you considered stating the identity? \(\sin(x+y) = \sin(x)\cos(y)+\cos(x)\sin(y)\)
Ammarah
  • Ammarah
yes i know it

Looking for something else?

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

More answers

tkhunny
  • tkhunny
Use the Pythagorean Theorem and the Quadrant Hints to find the cosine of x.
Ammarah
  • Ammarah
ok
tkhunny
  • tkhunny
What do you get?
Ammarah
  • Ammarah
1 sec
tkhunny
  • tkhunny
Do the same for the y in Quadrant III
tkhunny
  • tkhunny
Gaaa!!! You'll never make the State Finals like that!
Ammarah
  • Ammarah
? for cos x is it in quadrant 1?
tkhunny
  • tkhunny
Why would it be? We are told explicitly that x in in II.
Ammarah
  • Ammarah
do i use sin x?
Ammarah
  • Ammarah
i got rad 23 for
Ammarah
  • Ammarah
|dw:1450217953938:dw|
tkhunny
  • tkhunny
We're trying that again. |dw:1450217916708:dw|
tkhunny
  • tkhunny
Very good. What is the cosine of that angle?
Ammarah
  • Ammarah
rad 23 /5
tkhunny
  • tkhunny
Note: I ALWAYS draw them in the first quadrant and worry about the sign later. In your drawing, perhaps you should have come up with \(-\sqrt{23}\), but then it's not much of a right triangle.
tkhunny
  • tkhunny
That's right - except for the sign. Now, do the same for y.
Ammarah
  • Ammarah
quadrant 4?
tkhunny
  • tkhunny
III, where the cotangent is positive.
Ammarah
  • Ammarah
3 i mean
Ammarah
  • Ammarah
ohhh
Ammarah
  • Ammarah
why not 1st
tkhunny
  • tkhunny
\(\pi < y < 3\pi/2\) -- Given in the problem statement. Rad carefully.
Ammarah
  • Ammarah
ohh
Ammarah
  • Ammarah
rad 59
tkhunny
  • tkhunny
For what?
Ammarah
  • Ammarah
so cot y=8/15
tkhunny
  • tkhunny
|dw:1450218474760:dw|
Ammarah
  • Ammarah
rad 161

Looking for something else?

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