how to find the angles of a triangle from the sides?
86946
['Step 1 The two sides we know are Opposite (300) and Adjacent (400).', 'Step 2 SOHCAHTOA tells us we must use Tangent.', 'Step 3 Calculate Opposite/Adjacent = 300/400 = 0.75.', 'Step 4 Find the angle from your calculator using tan-1']
459256
['The sum of the angles in a triangle always equal 180o. ... ', 'Squares have 4 equal sides and the sum of the angles always equals 360o. ... ', 'To find the measurement of the interior angles in a square, you divide the sum of the angles (360o) by the number of sides (4).']
20516
['Apply the equation. to find the magnitude, which is 8.6.', 'Apply the equation theta = tan–1(y/x) to find the angle: tan–1(–7.0/–5.0) = 54 degrees. However, note that the angle must really be between 180 degrees and 270 degrees because both vector components are negative.']
509276
['The sine of the angle = the length of the opposite side. the length of the hypotenuse.', 'The cosine of the angle = the length of the adjacent side. the length of the hypotenuse.', 'The tangent of the angle = the length of the opposite side. the length of the adjacent side.']
250867
Apply the equation theta = tan–1(y/x) to find the angle: tan–1(1.0/–1.0) = –45 degrees. However, note that the angle must really be between 90 degrees and 180 degrees because the first vector component is negative and the second is positive.
637789
['The sum of the measures of the interior angles of a polygon with n sides is (n – 2)180.', 'The measure of each interior angle of an equiangular n-gon is.', 'If you count one exterior angle at each vertex, the sum of the measures of the exterior angles of a polygon is always 360°.']
307807
Apply the equation theta = tan–1(y/x) to find the angle: tan–1(–7.0/–5.0) = 54 degrees. However, note that the angle must really be between 180 degrees and 270 degrees because both vector components are negative.
482527
['Apply the Pythagorean theorem to find the magnitude. Plug in the numbers to get 5.1.', 'Apply the equation theta= tan–1(y/x) to find the angle. Plug in the numbers to get tan–1(5.0/1.0) = 79 degrees.']
959535
['use The Law of Sines first to calculate one of the other two angles;', 'then use the three angles add to 180° to find the other angle;', 'finally use The Law of Sines again to find the unknown side.']
357966
The sum of the exterior angles of a regular polygon will always equal 360 degrees. To find the value of a given exterior angle of a regular polygon, simply divide 360 by the number of sides or angles that the polygon has.
755810
According to the Law of Sines, the ratio of the sines of each angle divided by the length of the opposite side are all equal. This helps you to find the sides of the triangle. Add the two angles together and subtract the sum from 180 degrees to find the third angle.
547605
Remember, double the area and then divide by the known side length. To calculate the area of a triangle, we multiply the base times the height and divide by 2. If you are given the area, follow the steps backwards. You will multiply by 2 and divide by the given length.
895757
The angles in the triangle you drew all add up to 180°. Remember, all angles on a straight line add up to 180°.
208832
['Adjacent. The two sides of a triangle which form a particular vertex are referred to as adjacent to that angle. ... ', 'Opposite. ... ', 'Base. ... ', 'Apex. ... ', 'Height. ... ', 'Isosceles Triangle. ... ', 'Equilateral Triangle. ... ', 'Scalene Triangle.']
43996
In the ambiguous case we first find the height by using the formula h=bsinA . Note that A is the given angle and its side is always a so the other side will be b . h<a<b then then there are two solutions or two triangles. h<b<a then there is one solution or one triangle.
127642
Multiply the sine of angle B by the length of the side opposite angle A (side A). For the example, if side A measured 10 inches: 0.71 x 10 = 7.1. Divide this number by the sine of angle A to find the length of side B. For the example, angle A measured 30: sine 30 = 0.5: 7.1/0.5 = 14.2 inches for the length of side B.
120283
If it is a right triangle, use the Pythagorean Theorem (A squared + B squared = C squared) to find the missing side. How can I calculate the area of an equilateral triangle? If you know the base and height, you can use the standard formula A = 1/2bh.