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Sergio [31]
3 years ago
12

Someone please help

Mathematics
1 answer:
Molodets [167]3 years ago
6 0
Ldgkdglydlydydl flyflyfyllyd fgdlgd
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What is another way to write 15 minutes before 9?
dimulka [17.4K]

Answer:

8:45

9:00 - 0:15 = 8:45

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ValentinkaMS [17]
4+4+6+6=12+8=20

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7 0
2 years ago
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How do I know what the circle and triangle equal to?
Brrunno [24]

Answer:

circle= 5, triangle= 3

Step-by-step explanation:

Please see attached picture for full solution.

8 0
3 years ago
Please help me and explain please!
Ann [662]
It would be 15 greater than or equal to 14
5 0
3 years ago
I need the whole solution
ddd [48]

Confused what the question is. Are you looking for the product or the zeroes?

If you are looking for the product, then:

Use foil to get: sec²(1) - sec²(-csc²) -1(1) -1(-csc²)

= sec² + sec²csc² - 1 + csc²

= sec²csc² + sec² + csc² - 1

= sec²csc² + 1 - 1 (NOTE: sec² + csc² = 1 is an identity)

= sec²csc²

Answer: sec²csc²

***************************************************

If you are looking for the zeroes, then:

Using the zero product property, set each factor equal to zero and solve.

<u>First factor:</u>

sec²Θ - 1 = 0

sec²Θ = 1

secΘ = 1, -1

remember that secΘ is \frac{1}{cos}

\frac{1}{cos} = 1 \frac{1}{cos} = -1

cross multiply to get:

cosΘ = 1 cosΘ = -1

use the unit circle (or a calculator) to find that Θ = 0 and π

<u>Second factor:</u>

1 - csc²Θ = 0

1 = csc²Θ

1, -1 = cscΘ

remember that cscΘ is \frac{1}{sin}

\frac{1}{sin} = 1 \frac{1}{sin} = -1

cross multiply to get:

sinΘ = 1 sinΘ = -1

use the unit circle (or a calculator) to find that Θ = \frac{\pi}{2} and \frac{3\pi}{2}

Answer: 0, π, \frac{\pi}{2} , \frac{3\pi}{2}

7 0
3 years ago
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