What is the exact value of cos(195°)?

Mathematics

2 answers:

ANTONII [103]3 years ago

6 0

Answer:

Correct Answer is D

Step-by-step explanation:

Brut [27]3 years ago

3 0

Answer:

I think it is the option c.

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Need help please on geometry

zimovet [89]

To solve this we are going to use the formula for the area of a circle: $A= \frac{1}{4} \pi d^2$
where
$A$ is the area of the circle
$d$ is the diameter of the circle

We know from our problem that the area of our circle is 10 inches long, so $d=10in$ . Lets replace that value in our formula to find $A$ :
$A=\frac{1}{4} \pi (10in)^2$
$A=78.54in^2$

We can conclude that the correct answer is: 78.54 square inches, or in centimeters: 506.7 square cm.

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3 years ago

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All possible roots of x^3+2x^2-16x-32

nekit [7.7K]

Answer:

See below.

Step-by-step explanation:

By the rational roots theorem all possible roots are:

+/-1. +/- 2, +/-4 .+/-8, +/-16 and +/-32.

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3 years ago