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Suppose you are given one angle A and the ratio is R so that the other two angles are B and BxR.


Then: A + B + BxR = 180.


B (1 + R) = 180 - A


so the answer is B = (180 - A) / (1 + R)


e.g. you are given A=60 and R=2


so B = (180 - 60) / (1 + 2) = 40 and the last angle is 80.

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Q: How do you find the unknown angle when one angle is given and the other angles are known in the form of ratios are given?
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How do you find the angles of a triangle when you are given ratios?

The sum of the angles is 180 degrees. So if the ratios are a, b and c then the angles are180*a/(a+b+c), 180*b/(a+b+c) and 180*c/(a+b+c) degrees.


What is the name given to angles that form a right angle when added together?

Right angles aren't formed by other angles - it is already an angle itself. However, if you bisect a right angle, it becomes two acute angles.


If an angle of rhombus is 35degrees what are the remaining three angles?

The opposite angles of a rhombus are congruent. So the angle opposite to the given angle is also 35 degrees. The consecutive angles of a rhombus are supplementary (add up to 180 degrees). So the supplement angle of the given angle is 145 degrees (180 - 35), and the angle opposite to that angle also will be 145 degrees.


How do you find all the angles of a triangle with only one angle available?

it is impossible to do because you need at least 2 angles to tell the other one All unknown sides and angles of a triangle can be found only when one side and two angles, two sides and the included angle, two sides and an angle opposite one of them, or three sides are given. All you will know is that the sum of the other two angels is 180 - (value of known angle).


How do you work out all three angles of a triangle?

Well, first of all, the angle sum of a triangle is 180o therefore all three angles must equal that.You will most likely get given degree of two angles and will be left with an unknown one. This will be worked out by:Adding the two angles together = _______Subtract that answer by the angle sum of a triangle 180o.That's your answer...hope this helped :)

Related questions

How do you find the missing angle of a triangle if you are given two of the angles?

180 minus two known angles = unknown angle


What are the 3 trig ratios and how do they work?

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How do you calculate unknown angles?

You use the information you're given, along with the rules, equations and formulas you know that relate the given information to the unknown angles, to find the angles.


If measures of 3 supplementary angles are in the ratio 1 to 3 to 2 what are the values of the angles?

call the small angle x, then given the ratios we have x+2x+3x=180 6x=180 so x=30 The angles are 30, 60, and 90.


The angles of a triangle that are not adjacent to a given exterior angle?

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How do you find the angles of a triangle when you are given ratios?

The sum of the angles is 180 degrees. So if the ratios are a, b and c then the angles are180*a/(a+b+c), 180*b/(a+b+c) and 180*c/(a+b+c) degrees.


What is the name given to angles that form a right angle when added together?

Right angles aren't formed by other angles - it is already an angle itself. However, if you bisect a right angle, it becomes two acute angles.


If an angle of rhombus is 35degrees what are the remaining three angles?

The opposite angles of a rhombus are congruent. So the angle opposite to the given angle is also 35 degrees. The consecutive angles of a rhombus are supplementary (add up to 180 degrees). So the supplement angle of the given angle is 145 degrees (180 - 35), and the angle opposite to that angle also will be 145 degrees.


How do you find all the angles of a triangle with only one angle available?

it is impossible to do because you need at least 2 angles to tell the other one All unknown sides and angles of a triangle can be found only when one side and two angles, two sides and the included angle, two sides and an angle opposite one of them, or three sides are given. All you will know is that the sum of the other two angels is 180 - (value of known angle).


How do you work out all three angles of a triangle?

Well, first of all, the angle sum of a triangle is 180o therefore all three angles must equal that.You will most likely get given degree of two angles and will be left with an unknown one. This will be worked out by:Adding the two angles together = _______Subtract that answer by the angle sum of a triangle 180o.That's your answer...hope this helped :)


How do you find the missing angle of a square with no given angles?

All the angles of a square are 90 degrees.


What kind of angle is each angles in the given figure?

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