A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
when do i use sin, cos and tan in inverse form?
anonymous
 4 years ago
when do i use sin, cos and tan in inverse form?

This Question is Closed

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1an example might be that you are told the sin of an angle is 0.5 and asked to find the angle. then you would use the inverse sin function.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so when looking for the sides of a triangle?

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1when looking for sides, you usually use the sin/cos/tan functions. the inverses are usually used to find the angles.

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1so you might be given an angle and one side, and asked to find another side  that involves using sin/cos/tan. on the other hand, you might be given 2 sides and asked to find the angle  that involves using the inverse functions.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ohh ok... dw:1327355865365:dw how would i do this?

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1\[\cos(60)=\frac{5}{x}\]therefore:\[x=\frac{5}{\cos(60)}\]

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1you can use the mneumonic SohCahToa to remember them. Soh ===> sin = o/h Cah ===> cos = a/h Toa ===> tan = o/a

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1you pronounce it as "SAW CAH TOE AH"

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0equation set up.. how do you solve for the x tho?

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1just work out the fraction  5 divided by cosine of 60 degrees. I'm not sure where you are stuck?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0sry.. i thought it was 5/x tho?

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1ok  let me try to explain it step by step...

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thank you im horrible at math

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1ok, we know:\[\cos(60)=\frac{5}{x}\]are you happy with this statement?

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1good. so 1st step is to get rid of the 'x' in the fraction on the right hand side. the way you do that is to multiply both sides by 'x' as follows:\[x*\cos(60)=x*\frac{5}{x}\]

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1now, on the right hand side, the 'x' at the top and bottom of the fraction will cancel out to give you:\[x*\cos(60)=\cancel{x}*\frac{5}{\cancel{x}}=5\]

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1ok, so next step we want to do is to leave just 'x' on the left hand side. that can be done by dividing both sides by \(\cos(60)\) as follows:\[\frac{x*\cos(60)}{\cos(6)}=\frac{5}{\cos(60)}\]

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1then you'll notice the \(\cos(60)\)'s on the left hand side cancel each other out to give you:\[\frac{x*\cancel{\cos(60)}}{\cancel{\cos(6)}}=\frac{5}{\cos(60)}\]\[x=\frac{5}{\cos(60)}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yea.. for that would you get...5.24?

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1\[\cos(60)=0.5\]so:\[x=\frac{5}{\cos(60)}=\frac{5}{0.5}=10\]

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1maybe you entered 60 as radians instead of degrees in your calculator?

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1don't worry  we've all been there :)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0do u know how to find all sic trig functions...? lol

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1You might find this site useful: http://www.ping.be/~ping1339/gonio.htm

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1best thing to do is to keep practicing and post a question in this group when you get stuck on a particular problem. there are MANY people here who will be more than willing to spend time explaining things to you.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0okay thank you for helping
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.