3 years ago

Which of the following ordered pair are equal. a) (6,2) and (2,6)

Mathematics

1 answer:

Gwar [14]3 years ago

4 0

First one because thats simple

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Simplify using trigonometric identities<br> 2sinθ - sin2θ cosθ

Anit [1.1K]

Double angle identity for sine:

$\sin(2x) = 2 \sin(x) \cos(x)$

$\implies 2 \sin(\theta) - \sin(2\theta) \cos(\theta) = 2 \sin(\theta) - 2 \sin(\theta) \cos^2(\theta)$

Factorize the left side.

$2 \sin(\theta) - 2 \sin(\theta) \cos^2(\theta) = 2 \sin(\theta) \left(1 - \cos^2(\theta)\right)$

Pythagorean identity:

$\cos^2(x) + \sin^2(x) = 1$

$\implies 2 \sin(\theta) \left(1 - \cos^2(\theta)\right) = 2 \sin^3(\theta)$

so that

$\boxed{2 \sin(\theta) - \sin(2\theta) \cos(\theta) = 2 \sin^3(\theta)}$

8 0

2 years ago

Marcos is flying a kite 35 feet above an oak tree. The angle of elevation to the top of the tree is 16 and the angle of elevatio

cricket20 [7]

Answer:

195 ft.

Step-by-step explanation:

I don't have an actual explanation because I simply guessed based on the dimensions and what made the most sense and I got it right. If someone has an explanation as to why it is 195 ft please lmk. Other than that, 195 ft is the correct answer.

3 0

3 years ago

I don’t feel like doing math

Zinaida [17]

Answer:

26.14

Step-by-step explanation: Just subtract.

7 0

3 years ago

During a sale, a dress is marked down from a selling price of $80 to a sale price of $60. What is the percent markdown

Zanzabum

$80 x .25 = 20

$80-20=$60

25% markdown

5 0

3 years ago

Can the sum of two mixed numbers equal 2

Licemer1 [7]

No because mixed numbers need atleast a one and a fraction to be a mixed number

4 0

3 years ago