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0.790 radians (45.2 degrees) and 2.352 radians (134.8 degrees).
If you are really talking about a closed triangle ABC, then the length of side "a" (given as 19) does not matter in the calculation. Sum of the angles of a triangle is 180 degrees. Angle B and C add up to 15 + 65 = 80 degrees. Hence angle A is (180 - 80) = 100 degrees
The 3rd angle is 80 degrees
triangle measure
If you know the measure of one angle, and the length of one side of a triangle, you can find the measures of the other sides and angles. From there, you can find the values of the other trig functions. cos (x) = sin (90-x) in degrees there are other identities such as cos^2+sin^2=1, so cos^2=1-sin^2
(180 - 38)/2 = 71 degrees (base angles of an isosceles triangle are congruent).
63 degrees
57.5 degrees
84 degrees
84 degrees
The vertex angle of an isosceles triangle is equal to the measure of each of its base angles. Therefore, if one of the base angles measures 42 degrees, then the vertex angle also measures 42 degrees.
80 degrees.
If your "53" is in degrees, then the vertex angle is 74 degrees.
40 degrees each
130 degrees is the measure of the base angles of an isosceles triangle whose vertex has a measure of 50 degrees.
Its 2 equal base angles will each measure 65 degrees
Each base angle is 62.5 degrees