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anonymous
 5 years ago
This is my math problem: I a triangle ABC, angle B is 3 times angle A and angle C is 2degrees less than 6 times angle A. Find the size of the angles. ? Can anyone solve this in equation steps?
anonymous
 5 years ago
This is my math problem: I a triangle ABC, angle B is 3 times angle A and angle C is 2degrees less than 6 times angle A. Find the size of the angles. ? Can anyone solve this in equation steps?

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sandra
 5 years ago
Best ResponseYou've already chosen the best response.0right, so this is a problem where you have three variables (the three angles), and so you'll need three equations to solve it

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0so let's write down three equations

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0so there's one equation that's true for all triangles

sandra
 5 years ago
Best ResponseYou've already chosen the best response.03. A+B+C = 180 (the sum of all angles in a triangle is always 180 degrees)

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0now what you need to do is substitute until you get an equation with all one variable

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0how about let's try and get all A's

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0so we know B=3A, and C=6A  2

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0so let's substitute both of those into the third equation  A+B+C = 180

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0so A + (3A) + (6A2) = 180

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0now that you have the value of A, you need to substitute it back into other equations to get B and C

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0if you do that, you'll have the answer
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