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Dallasb22Best ResponseYou've already chosen the best response.0
A=(_√_) divided by _
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
dw:1348069206419:dw do you know how to find x?
 one year ago

Dallasb22Best ResponseYou've already chosen the best response.0
Actually i am brain frozen and cannot remember the formula. Can you tell me the formula please?
 one year ago

tyteen4a03Best ResponseYou've already chosen the best response.1
The formula for tan x is opp/adj. The formula for finding the area of a trapezoid is ((upper length + lower length) * height)/2.
 one year ago

Dallasb22Best ResponseYou've already chosen the best response.0
Finding X in his above drawing would give me the height so i could than find the area.
 one year ago

Dallasb22Best ResponseYou've already chosen the best response.0
But I do not remember how to find it. I have never used tan or sin before.
 one year ago

Dallasb22Best ResponseYou've already chosen the best response.0
dw:1348069912936:dw
 one year ago

tyteen4a03Best ResponseYou've already chosen the best response.1
Were you taught trigonometry (sin, cos, tan) in your math lessons?
 one year ago

Dallasb22Best ResponseYou've already chosen the best response.0
I am only in Geometry, so not yet.
 one year ago

tyteen4a03Best ResponseYou've already chosen the best response.1
This 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)
 one year ago

tyteen4a03Best ResponseYou've already chosen the best response.1
uh... 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.
 one year ago

tyteen4a03Best 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 )
 one year ago

Dallasb22Best ResponseYou've already chosen the best response.0
Okay i think i got it. Yes i know the triangle ratio 306090
 one year ago
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