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sineoko [7]
3 years ago
10

#1 Using the right triangle below, find the cosine of angle A.

Mathematics
1 answer:
motikmotik3 years ago
7 0

Answer: 0.8

Step-by-step explanation:

Using the Cosine formula :

Cos A = \frac{b^{2}+c^{2}-a^{2}}{2bc}

a = 6

b = 8

c = 10

substituting into the formula , we have

Cos A = \frac{8^{2}+10^{2}-6^{2}}{2(8)(10)}

Cos A = \frac{64+100-36}{160}

Cos A = \frac{164-36}{160}

Cos A = \frac{128}{160}

Therefore :

Cosine of angle A = 0.8

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You need to add up all 3 mixed numbers to find the total laps.

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3 years ago
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Solve for c: <br> 12 - 9 + c = 12
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Step-by-step explanation:

12 - 9 + c = 12

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3 years ago
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6 0
3 years ago
Y-intercept = (0, 2)<br> slope = -3/7 what is the equation?
Marianna [84]

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Step-by-step explanation:

(see attached)

recall that the slope-intercept form of a linear equation is

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Answer:

Step-by-step explanation:

i'll do a few of them

1)   one inch plus a half inch plus an eighth inch plus a sixteenth inch

     1 + 1/2 + 1/8 + 1/16         read the tick marks

     1 + 8/16 + 2/16 + 1/16    find a common denominators

     1 and 11/16                    add the sixteenth numerator

2)

3)

4)  6 inch  plus an eighth inch plus a sixteenth inch

     6 +  1/8 + 1/16         read the tick marks

     6 + 2/16 +  1/16       find a common denominators

     6 and 3/16              add the sixteenth numerator

5)   nine inch plus a quarter inch plus an eighth inch

     9  + 1/4 + 1/8          read the tick marks

     9 + 2/8 + 1/8          find a common denominators

     9 and 3/8              add the sixteenth numerator

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3 years ago
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