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antiseptic1488 [7]
1 year ago
11

PLEASE HELP I GIVE 95 POINTS

Mathematics
1 answer:
Gelneren [198K]1 year ago
3 0
D,
3^x is positive, and the y-in. is 1.
3^0 = 1
Process of elimination.
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1 mile per 5 minutes

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Find, correct to the nearest degree, the three angles of the triangle with the given vertices.
Leokris [45]

Answer:

angle CAB = 113.8 degree

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angle BCA = 30.6 degree

Step-by-step explanation:

Given data:

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C(1, 5, 2)

calculate the length of side by using the distance formula

so

AB = (5,-3,0) - (1,0,-1) = (4,-3,1)

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|AB|

|AC| =\sqrt {(0 + 5^2+3^2)} = \sqrt{34}

From following formula, calculate the angle between the two side i.e Ab and AC

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(4,-3,1).(0,5,3)

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-12 =

cos ∠CAB = - 0.404

angle CAB = 113.8 degree

BA =B- A =  (1,0,-1) - (5,-3,0) = (-4,3,-1)

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16+24-2

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angle ABC = 35.6 degree

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sum of all three angle = 180

angle BCA + 35.6 + 113.8 = 180

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