Given sin=1/2 and the terminal side of angle theta is in quadrant 2, then sin((pi/2)-theta) is?

Mathematics

1 answer:

azamat4 years ago

5 0

Pi/2=33pi do u have that answer or pi/ 44

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I know you add it but can you please help and show work

kondaur [170]

Answer is b i know this

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4 years ago

2. The ratio of boys to girls in the school

andrew11 [14]

Since the ratio is 3:4, and 12/4 is 3 than you do 3x3 and get 9 so the answer is 9:12 or 9 boys and 12 girls. To check your answer, you can do 3/4 (for 3:4) and that is 0.75. If you do that with 9:12 you also get 0.75.

5 0

3 years ago

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Solve the equation thanks!

AlladinOne [14]

Answer:

c = $\frac{27}{40}$

Step-by-step explanation:

To eliminate the fractions, multiply all terms by the lowest common multiple of 8 and 5

The lowest common multiple of 8 and 5 is 40

5 + 40c = 32 ( subtract 5 from both sides )

40c = 27 ( divide both sides by 40 )

c = $\frac{27}{40}$

8 0

3 years ago

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I need help with all of these I don’t get it

pochemuha

The first question each friend gets 1/8 of the whole pizza
for half of the pizza each friend gets 1/4 so that times 2 equals 1/8

The second question one person gets 1/15 of the brownie pan
1/5 times 3 equals 1/15

The third question 1/3 cup one serving 1 cup three servings three times six equals 18 servings

The fourth question 1/5 cup one muffin one cup 5 muffins five times nine equals forty-five muffins

Hope this helps

8 0

3 years ago

Circles M and K are congruent, QR is congrent to LN. Find the length of QR

Novosadov [1.4K]

Given QR is congrent to LN and QR = 4x + 2 and LN = x + 7.

So, QR = LN

Hence, we can set up an equation as following:

4x + 2 = x + 7

4x + 2 - x = x + 7 - x Subtract x from each sides.

3x + 2 = 7 By simplifying.

3x + 2 - 2 = 7 - 2 Subtract 2 from each sides.

3x = 5