SOLUTION: The sum of the two non right angles in a right triangle is, of course, 90 .If twice the first is 40 more than 3 times the second find the angles.
pls help me to solve this one
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Question 209799This question is from textbook ALGERA
: The sum of the two non right angles in a right triangle is, of course, 90 .If twice the first is 40 more than 3 times the second find the angles.
pls help me to solve this one
thank you very much for your help
This question is from textbook ALGERA
Answer by tutor_paul(519) (Show Source): You can put this solution on YOUR website!
This is a problem where you have 2 unknowns. You need to develop 2 equations containing these unknowns. Then you can solve the problem.
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Let x = Angle #1
Let y = Angle #2
You already developed one equation:
Equation #1:
Now you need to use the information given to develop the second equation.
Equation #2:
Now you have 2 equations and 2 unknowns. Anytime you have at least as many equations as unknowns, you can solve the problem!
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use the substitution method to solve the equations:
First, solve for y in Equation #1:
Next, substitute this expression for y into Equation #2.
Sole for x:
Finally, substitute this expression for x into Equation #1 and solve for y.
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Good Luck,
tutor_paul@yahoo.com
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