Lengths of two sides of the triangle and the angle between them are known. Find the length of the third side and the area of the triangle.
We don't know what type of a triangle we're considering here. Therefore the universal and quickest solution to the first problem is use of the cosine rule, which states that for a triangle with sides a,b and c and the angle θ between sides “a” and “b”:c2=a2+b2-2abcos(θ) To find the area of the triangle we should use the formula: A=1/2absin(θ)
SK
Answered by Szymon K. • Further Mathematics tutor
8158 Views
See similar Further Mathematics GCSE tutorsRelated Further Mathematics GCSE answers
All answers ▸Given a^2 < 4 and a+2b = 8. Work out the range of possible values of b. Give your answer as an inequality.
A circle has equation x^{2}-8x+y^{2}-6y=d. A line is tangent to this circle and passes through points A and B, (0,17) and (17,0) respectively. Find the radius of the circle.
How do I determine if a stationary point on a curve is the maximum or minimum?
Given that xy=2 and y=3x+5, find x and y. Do not use trial and improvement.