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ivanzaharov [21]
3 years ago
7

Based on Pythagorean identities, which Equation is true?

Mathematics
2 answers:
Pavel [41]3 years ago
8 0
The answer is cot² ∅ - csc² ∅ = -1

Referring to Pythagorean identities: 
sin² ∅ + cos² ∅ = 1
1+cot² ∅ = csc² ∅
tan² ∅ + 1 = sec² ∅

1+cot² ∅ = csc² ∅  
⇒ transposing 1 and csc² ∅ we will have now
cot² ∅ - csc² ∅ = -1
lara [203]3 years ago
4 0

Answer: The answer is D.


Step-by-step explanation:


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Nancy has $4,111 in an account that pays 1.07% interest compounded monthly. What is her
GuDViN [60]

Answer:

$4199.88

Step-by-step explanation:

We're gonna use the compound interest formula: P = A(1 + r/n)^nt

P = final amount

A = starting amount (4,1111)

r = rate (0.0107)

n = times applied (12 since it's quarterly)

t = years (2 x 12 = 24)

P = 4,111(1 + 0.0107/12)^24

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P = 4,111(1.021621)

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Round it to 4199.88

6 0
3 years ago
Describe the process in proving that the solution of an inequality is valid.
geniusboy [140]
Ok so you have to work backwards so lets say 
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3 years ago
Surface area of a sphere is 615.752 m2, what is the volume of the sphere?
const2013 [10]

B

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We require to know the radius r to calculate the volume

using surface area of a sphere = 4πr² = 615.752

divide both sides by 4π

r² = \frac{615.752}{12.56} = 49.0248...

take the square root of both sides

r = \sqrt{49.0248..} ≈ 7, hence

V= \frac{4}{3} × π × 7³ = 1436.76 m³ → B



8 0
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Connie started with___<br> in her saving account<br><br><br> Fill in the blank
Irina18 [472]

Answer:

Connie started with <u>$25</u> in her savings account.

Step-by-step explanation:

The y-intercept is the value of the function at time zero.

At x = 0, which is week zero, when Connie opened the account, the y value is 25. That means she opened the account with $25.

Answer: $25

3 0
3 years ago
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