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PIT_PIT [208]
2 years ago
10

What is the measurement of angle A? ​

Mathematics
1 answer:
Morgarella [4.7K]2 years ago
7 0

Answer:

51

Step-by-step explanation:

All triangles =180 degrees

180-78 = 102

Since this triangle is an isosceles triangle, that means that 2 sides are the same length, and that 2 angles are the same.

102/2 (you divide by 2 bc the angles unknown are the same measurement) and that equals 51 degrees

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otez555 [7]

Answer:

11). x = 25.8°

12). x = 67.3°

Step-by-step explanation:

11). By using sine rule in the given triangle,

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   cos(x) = \frac{27}{30}

   x = \text{cos}^{-1}(\frac{9}{10} )

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12). By applying tangent rule in the given triangle,

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    tan(x) = \frac{43}{18}

    x = \text{tan}^{-1}(\frac{43}{18} )

    x = 67.29°

    x ≈ 67.3°  

5 0
3 years ago
An item sells for $30 and is on sale for 15% off and the sales tax is 8.2%. What is the final cost to the nearest cent? (Calcula
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Answer:

$27.59

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If the sum of two numbers is x

Then the equation is like this:

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12 + b =x

If we want to find the other number, we need the make it into the subject

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6 0
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