A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing

This Question is Closed

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1348069206419:dw do you know how to find x?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Actually i am brain frozen and cannot remember the formula. Can you tell me the formula please?

tyteen4a03
 2 years ago
Best ResponseYou've already chosen the best response.1The formula for tan x is opp/adj. The formula for finding the area of a trapezoid is ((upper length + lower length) * height)/2.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Finding X in his above drawing would give me the height so i could than find the area.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0But I do not remember how to find it. I have never used tan or sin before.

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1348069912936:dw

tyteen4a03
 2 years ago
Best ResponseYou've already chosen the best response.1Were you taught trigonometry (sin, cos, tan) in your math lessons?

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0I am only in Geometry, so not yet.

tyteen4a03
 2 years ago
Best ResponseYou've already chosen the best response.1This question involves trigonometry... I will just give you a crash course. For the triangle dw:1348070256213:dw (do notice that these formulas only work on triangles with a right angle), we pick a angle that is not the right angle itself. This time, I pick <AC. (answers continued since I can't see what I just drew)

tyteen4a03
 2 years ago
Best ResponseYou've already chosen the best response.1uh... I meant <C. Anyways, we usually represent angles with the symbol theta (\(\theta\)). Remember these properties: (all of these are lengths of the said line) sin \(\theta\) = opposite/hypotenuse (sine) cos \(\theta\) = adjacent/hypotenuse (cosine) tan \(\theta\) = opposite/adjacent (tangent) What is opposite and what is adjacent in here? Notice that the angle <C is opposite of the line AB, so that is the opposite line. The <C is adjacent (or in other terms "sticks") to the line BC, so that's the adjacent. Let's look back at the question bit @Igbasallote asked you to solve. Here, tan\(\theta\) = x/3 (opposite/adjacent). Multiply both sides by 3, and get 3 tan\(\theta\) = x. It also specified that the angle is 60 degrees. I'll give you the answer here: tan 60degrees = \(\sqrt{3}\). Now multiply the answer by 3, and the answer becomes \(3\sqrt{3}\). Congrats, you just learnt pieces your classmates might've never learned. However, I suggest telling your teacher that you haven't learned trigonometry yet so he/she will not give you these kind of questions.

tyteen4a03
 2 years ago
Best ResponseYou've already chosen the best response.1(Just that if you're curious how I pulled tan 60degrees out of the air, 60 degrees is actually a special angle. You can find the values of trigonometry function on special angles here: http://www.mathwords.com/t/trig_values_of_special_angles.htm )

Dallasb22
 2 years ago
Best ResponseYou've already chosen the best response.0Okay i think i got it. Yes i know the triangle ratio 306090
Ask your own question
Ask a QuestionFind 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.