2 years ago

For what value of x is sin x = cos 19º, where 0°< x < 90°?

Mathematics

1 answer:

KonstantinChe [14]2 years ago

7 0

Answer:

71°

Step-by-step explanation:

The cosine of an angle is equal to the sine of its complement:

cos(19°) = sin(90° -19°) = sin(71°)

Comparing to the given expression, we see that x = 71°.

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The difference between 3 times a number and 21

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3n - 21

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lubasha [3.4K]

Answer:

47 rows

Step-by-step explanation:

To find the amount of needed rows, we will use the math operation division. We will take the total and divide it by the amount in each row.

846/18=47

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-4 1/8 as decimal.
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2 years ago

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Answer:

$2\dfrac{11}{12}$

Step-by-step explanation:

The first step is to ensure that all of the fractions have a common denominator.

$3\dfrac{1}{3}+\left( -2\dfrac{1}{4} \right) + 1\dfrac{5}{6}= \\\\3\dfrac{4}{12} - 2\dfrac{3}{12} +1 \dfrac{10}{12}= \\\\1\dfrac{1}{12}+1\dfrac{10}{12}= \\\\\boxed{2\dfrac{11}{12}}$

Hope this helps!

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2 years ago

1/4 c=__pt? Fill the blank

jonny [76]

Step-by-step explanation:

A pint has 2 cups

2 cups = 1 pint

1 cup = 1/2 pint

1/4 cup = 1/2 ÷ 4 = 1/2 * 1/4 = 1/8 pint

3 0

2 years ago