Use the cosine rule: a2 = b2+c2-2bc*cos A
BC2 = AB2+AC2-2*AB*AC*cos A
BC2 = 32+52-2*3*5*cos 57
BC2 = 17.66082895
BC = 4.20247887 cm in length
In a right triangle with the hypotenuse c equals 10 and the angle A equals 50 degrees the angle B equals: 40 degrees.
Angle C = 50 degrees. ------------------------------- A triangle equals 180 degrees. 60.5 + 69.5 = 150 180-150 = 50.
A right angle triangle
Is angle C 90 degrees or 80 degrees?
An isosceles right angle triangle
In order to find length BC the length of AC or length of the hypotenuse must be given
In a right triangle with the hypotenuse c equals 10 and the angle A equals 50 degrees the angle B equals: 40 degrees.
Angle C = 50 degrees. ------------------------------- A triangle equals 180 degrees. 60.5 + 69.5 = 150 180-150 = 50.
82 degrees (180 degrees in a triangle)
The sum of a triangle equals 180 degrees
55 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
52.4 cm
A right angle triangle
A triangle with interior angles of 42, 87 and 24 degrees doesn't exist because the angles add up to 153 degrees whereas the interior angles of any triangle always add up to 180 degrees.
The angle is 50 degrees.
An isosceles right angle triangle