3 years ago

The difference between 8 forty-sevens and forty-sevens

Mathematics

1 answer:

melisa1 [442]3 years ago

6 0

847 s - 47 I think that’s what it is

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Does anyone know this answer to this questions

7nadin3 [17]

ANSWER

-4.0

EXPLANATION

The given trigonometric equation is

$\tan \: 45 \degree - 10 \: \cos \: 60 \degree$

From special angles or using the unit circle.

$\tan \: 45 \degree = 1$

$\cos \: 60 \degree = \frac{1}{2}$

We make the substitution to get:

$1 - 10 ( \frac{1}{2} ))$

This simplifies to:

$1 - 5 = - 4$

Hence the correct answer is -4.0

4 0

4 years ago

The terminal side of 0 is in quadrant II and cos 0 = -5/13. What is sin 0?

zaharov [31]

Answer:

$\displaystyle \sin\theta=\frac{12}{13}$

Step-by-step explanation:

We are given that:

$\displaystyle \cos\theta =-\frac{5}{13}\text{ where $\theta$ is in QII}$

Recall that cosine is the ratio of the adjacent side to the hypotenuse. Using the Pythagorean Theorem, solve for the opposite side (we can ignore the negative for now):

$o=\sqrt{13^2-5^2}=12$

And since θ is in QII, sine is positive, and cosine and tangent are both negative.

Sine is the ratio of the opposite side to the hypotenuse. Therefore:

$\displaystyle \sin\theta=\frac{12}{13}$

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Please help me!! I never learned money and this would really help me.

vaieri [72.5K]

Answer: $.61

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