If you have two other angles, then add up those 2 and subtract that from 180. if you have all 3 sides then use the law of cosines: a squared = b squared + c squared - 2bc (cos A) If you have one angle and the 2 included sides, use the law of cosines as well. if you have an angle and the length of its opposite side, and the side opposite to the angle you want, then use the law of sines: sin A/ a = sin B/ b if you have the angle and the length of its opposite side and another angle, use the law of sines to figure out the unwanted angle anyway and then follow situation 1.
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If it's a triangle then: 180-sum of known angles = unknown angle
you add them then subtract by 180 to find the unknown angle
A missing angle of 30 degrees often refers to a scenario in geometry where you need to find an unknown angle in a triangle or another shape. For instance, in a triangle, if two angles are known, the missing angle can be calculated by subtracting the sum of the known angles from 180 degrees. Therefore, if you have one angle measuring 30 degrees and the other angle known, you can apply this method to find the missing angle.
To use the slope ratio to find a side of a triangle, you can apply the concept of the tangent of an angle in a right triangle. The slope ratio is defined as the rise (vertical change) over the run (horizontal change), which corresponds to the tangent of the angle formed by the triangle. By knowing one side and the angle, you can set up the equation: tangent(angle) = opposite/adjacent. Rearranging this equation allows you to solve for the unknown side length using the known side and angle.
It works out as: 180 minus the 2 known angles = unknown angle
Trigonometry and Pythagoras' theorem
180 minus two known angles = unknown angle
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The cotangent is used when you want to find an unknown angle in a right angled triangle when two sides (not the hypotenuse) and the included right angle are known.
If it's a triangle then: 180-sum of known angles = unknown angle
If you have the length of two of the sides and one other angle you can use the law of sines.
you add them then subtract by 180 to find the unknown angle
The 90 degree angle in a right angle triangle is opposite its hypotenuse.
A missing angle of 30 degrees often refers to a scenario in geometry where you need to find an unknown angle in a triangle or another shape. For instance, in a triangle, if two angles are known, the missing angle can be calculated by subtracting the sum of the known angles from 180 degrees. Therefore, if you have one angle measuring 30 degrees and the other angle known, you can apply this method to find the missing angle.
To use the slope ratio to find a side of a triangle, you can apply the concept of the tangent of an angle in a right triangle. The slope ratio is defined as the rise (vertical change) over the run (horizontal change), which corresponds to the tangent of the angle formed by the triangle. By knowing one side and the angle, you can set up the equation: tangent(angle) = opposite/adjacent. Rearranging this equation allows you to solve for the unknown side length using the known side and angle.
if the triangle has one right angle in it