2 years ago

If the sin 30° = one half, then which statement is true?

Mathematics

1 answer:

Oliga [24]2 years ago

4 0

Answer:

cos 60° = one half because the angles are complements

Step-by-step explanation:

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3 years ago

In ∆ABC, AC = 15 centimeters, m B = 68°, and m C = 24°. What is BC to two decimal places?

Ahat [919]

16.17

(

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Explanation:

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−

(

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For this case we must simplify the following expression:

$3 \frac {3} {4} -1 \frac {3} {14} =$

To do this, we convert the mixed numbers to improper fractions:

$\frac {4 * 3 + 3} {4} - \frac {14 * 1 + 3} {14} =\\\frac {15} {4} - \frac {17} {14} =\\\frac {14 * 15-4 * 17} {4 * 14} =\\\frac {210-68} {56} =\\\frac {142} {56} =\\\frac {71} {28} =\\2 \frac {15} {28}$

Answer:

$\frac {71} {28} = 2 \frac {15} {28}$

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3 years ago

Which undefined geometric term is described as a two-dimensional set of points that has no beginning or end?

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lutik1710 [3]

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