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Rainbow [258]
3 years ago
13

Chose the missing side length and the trigonometric ratio you would use to calculate.

Mathematics
1 answer:
Over [174]3 years ago
3 0

Answer:

The missing value is 2.9mm and cosine was used

Step-by-step explanation:

Given triangle is a right-angled triangle  we can use trigonometric ratios to calculate the missing length.

In the given triangle,

Base = k

Hypotenuse = 15mm

Angle = 79

We will use trigonometric ratio which includes base and hypotenuse.

Using cosine,

cos\ (angle) = \frac{Base}{hypotenuse}\\cos\ 79 = \frac{k}{15}\\k = cos\ 79 * 15\\k = 0.1908*15\\k = 2.862

Rounding off to nearest tenth

k= 2.9mm

Hence,

The missing value is 2.9mm and cosine was used

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Please help and show how you got the answer:
kari74 [83]

4 - 6n = 60 - 2n   <em>subtract 4 from both sides</em>

-6n = 56 - 2n    <em>add 2n to both sides</em>

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n = - 14


-7 + 11p = 3p - 47       <em>add 7 to both sides</em>

11p = 3p - 40      <em>subtract 3p from both sides</em>

8p = -40      <em>divide both sides by 8</em>

p = - 5


3a - 28 - 7a = 10a          <em>combine like terms</em>

(3a - 7a) - 28 = 10a

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-14a = 28     <em>divide both sides by (-14)</em>

a = - 2


17 - 5r + 9r = 12 + 6r - 1       <em>combine like terms</em>

17 + (-5r + 9r) = (12 - 1) + 6r

17 + 4r = 11 + 6r      <em>subtract 17 from both sides</em>

4r = -6 + 6r     <em>subtract 6r from both sides</em>

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8(y - 7) = -2(y + 3)    <em>use distributive property: a(b + c) = ab + ac</em>

(8)(y) + (8)(-7) = (-2)(y) + (-2)(3)

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(-3)(8k) + (-3)(5) = (3)(9) + (3)(-k)

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-21k = 42     <em>divide both sides by (-21)</em>

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6 0
3 years ago
I have to find two points for this eqaution.. x+1=0​
lisov135 [29]

I think there is only one point x = -1.

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Second point: (0,1)

//Hope this is what you are looking for. Sorry if it's incorrect.

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Answer:

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