describe and correct the error in writing an equation of the line with a slope of 2 and a y intercept of 7
1 answer:
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9² = 12² + 15² - 2 (12) (15) cos (B)
81 = 144 + 225 - 360 cos(B)
81 = 369 - 360 cos (B)
360 cos (B) = 369 - 81
360 cos (B) = 288
cos (B) = 0.8
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Answer: Cosine B = 0.8
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12² = 15² + 9² - 2 (15)(9) cos (A)
144 = 225 + 81 - 270 Cos A
144 = 306 - 270 Cos A
270 Cos A = 162
Cos A = 3/5 or 0.6
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Answer: Cosine Angle A = 3/5
Answer:
Graph dots in the points of the following:
(-4,10)
(-3,8)
(-2,6)
(-1,4)
(0,2)
(1,0)
(2,-2)
(3,-4)
(4,-6)
(5,-8)
(6,-10)
Connect these dots to make a line.
