0
What is the length of BC in the triangle ABC when AB equals 3 cm AC equals 5 cm and angle A is 57 degrees?
Wiki User
∙ 13y ago
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
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
In a right triangle with the hypotenuse c equals 10 and the angle A equals 50 degrees the angle B equals?
In a right triangle with the hypotenuse c equals 10 and the angle A equals 50 degrees the angle B equals: 40 degrees.
If a triangle has an angle A equals 60.5 degree and angle b equals 69.5 degrees what is angle C?
Angle C = 50 degrees. ------------------------------- A triangle equals 180 degrees. 60.5 + 69.5 = 150 180-150 = 50.
What triangle that contains only one angle that equals 90 degrees?
A right angle triangle
What triangle has 2 sides the same and the same length and a angle of 90 degrees?
An isosceles right angle triangle
Angle C equals 90degrees in a right triangle ABC if a equals 50degrees and c equals 80degrees find angle b.?
Is angle C 90 degrees or 80 degrees?
What is the length of BC in this triangle angle BAC equals 40 degrees and angle ABC equals 50 degrees and angle BCA equals 90 degrees .?
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?
In a right triangle with the hypotenuse c equals 10 and the angle A equals 50 degrees the angle B equals: 40 degrees.
If a triangle has an angle A equals 60.5 degree and angle b equals 69.5 degrees what is angle C?
Angle C = 50 degrees. ------------------------------- A triangle equals 180 degrees. 60.5 + 69.5 = 150 180-150 = 50.
If Angle A equals 83 degrees and angle B equals 15 degrees find angle C?
82 degrees (180 degrees in a triangle)
If a triangle has an angle A equals 70 degrees and angle B equals 55 degree what is angle C?
55 degrees.
What is the angle of a triangle?
The sum of a triangle equals 180 degrees
What is the measure of angle A in triangle ABC if B equals 15 degrees C equals 65 degrees and side a equals 19?
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
Given triangle ABC angle B is 38 degrees angle c is 56 degrees and BC equals 63 cm find the length of AB?
52.4 cm
What triangle that contains only one angle that equals 90 degrees?
A right angle triangle
What is the area of a triangle if angle a equals 42 degrees angle b equals 87 degrees and angle c equals 24 degrees?
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.
Abc is a right triangle and angle a equals 40 what is the angle ecd?
The angle is 50 degrees.
What triangle has 2 sides the same and the same length and a angle of 90 degrees?
An isosceles right angle triangle
