Find the area (in square units) of each triangle described.
1. a = 8, c = 16, B = 60°
2. b = 6, c = 4 square root of 3, A = 30°
3. a = 1, b = 1, c = 1
4. a = 49, b = 33, c = 18
3 answers
First of all, what is the formula to get the area of a triangle?
area= height times base over two
For #1 and #2, you can use the fact that
area = 1/2 bc sinA (use two sides and the angle between them)
#3 is an equilateral triangle, which I'm sure you know how to do
For #4, use the law of cosines to find an angle, say A, then solve as with #1,2
area = 1/2 bc sinA (use two sides and the angle between them)
#3 is an equilateral triangle, which I'm sure you know how to do
For #4, use the law of cosines to find an angle, say A, then solve as with #1,2
1 answer