What is the area of a triangle whose vertices are R(-4,2),S(1,2), and T(-5,-4)
1 answer:
Answer:
The answer to your question is 30 u²
Step-by-step explanation:
Vertices
R(-4, 2)
S (1, 2)
T (-5, -4)
Find the area using matrices X Y
R -4 2
S 1 2
T -5 -4
R -4 2
=| (-4 x 2) + (1 x -4) + (-5 x 2) - [(-4 x -4) + (-5 x 2) + (1 x 2)]|
= |-8 - 4 - 10 - [ 16 - 10 + 2]|
= |-22 - [ 8]|
= |-22 - 8|
= |-30|
= |-30|
Area = 30 u²
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Step-by-step explanation:
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then do sin^-1 (0.66)
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C
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Answer:
16
Step-by-step explanation:
4c + 8
Replace 'c' with 2 and evaluate:
4(2) + 8
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Hope this helps.
