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3 years ago

Evaluate Sin^-1 sqrt2/2

Mathematics

1 answer:

AnnZ [28]3 years ago

4 0

Step-by-step explanation:

Let x = arcsin(√2/2).

We have sinx = √2/2, which is a basic trignometry identity. (sin45° = √2/2)

Since the range of arcsinx is [-90°, 90°] and 45° is within the range, the answer is 45° or π/4.

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Given the image of the right triangle below, choosing angle A as the reference angle, label which of the three sides of the tria

alina1380 [7]

Answer:

c is the hypotenuse

a is the leg opposite

b is the leg adjacent

Step-by-step explanation:

The hypotenuse is the line across the right angle

Since we have angle A, a is the one across, so it is the opposite

B is the adjacent one.

3 0

3 years ago

PLEASE help!!!!!!!!!!!!!!!!!!!!!!!!!!!

Luba_88 [7]

Answer: 11

Step-by-step explanation: 5x-15= 3x+7

Combine like terms: 2x= 7+15

Add = 2x= 22

Divide: equals 11

4 0

3 years ago

A rectangle with side lengths of 1/2 ft. and 3/4 ft. What is the area and perimeter?

alexira [117]

.5 x 2 = 1

.75 x 2 = 1.5

Area = 0.<span>375 ft^2</span>

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7 0

4 years ago

1 1/3 divided by 3 + 1/3

Phantasy [73]

The first step to solve this problem is to convert the first mixed number to an improper fraction.
$\frac{4}{3}$ ÷ 3 + $\frac{1}{3}$
Dividing is equivalent to multiplying with the reciprocal value,, so next you will need to change the signs.
$\frac{4}{3}$ x $\frac{1}{3}$ + $\frac{1}{3}$
Multiply the fractions
$\frac{4}{9}$ + $\frac{1}{3}$
Finally,, add the two fractions together to get your final answer
$\frac{7}{9}$
This means that the correct answer to your question is $\frac{7}{9}$ .
Let me know if you have any further questions
:)

3 0

4 years ago

A bag contains 120 marbles Some are red and the rest are black. There are 19 red marbles for every black marble. How many black

kobusy [5.1K]

Answer:

6 black

114 red

Step-by-step explanation:

19x6=114

6×1=6

114+6=120

7 0

4 years ago