3 years ago

Cot(45-A)=tan2A+ sec2A

Mathematics

1 answer:

tekilochka [14]3 years ago

8 0

Answer:

See picture.

Step-by-step explanation:

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A number, y, is five times another number, x. The sum of the two numbers is 42. Write the system of equations.

vovikov84 [41]

Answer:

5x+x=42

6x=42

x=7

Step-by-step explanation:

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3 years ago

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The vertices of square RSTV have coordinates R(-1,5), S(-3,1), T(-7,3), and V(-5,7). What is the perimeter of RSTV?

kompoz [17]

The perimeter of square RSTV is: 17.88 units

Further explanation:

As the given figure is a square, all of its sides will be equal. So we have to find one side to find the perimeter.

Given

R(-1,5), S(-3,1), T(-7,3), and V(-5,7)

The distance formula will be used to find the side

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^@}$

Let x be one side of square

$RS=x=\sqrt{(-3-(-1))^2+(1-5)^2}\\=\sqrt{-3+1)^2+(-4)^2}\\=\sqrt(-2)^2+(-4)^2}\\=\sqrt{4+16}\\=\sqrt{20}\\=4.47$

Let P be the perimeter of square

P= 4x

P=4*4.47

=17.88 units

The perimeter of square RSTV is: 17.88 units

Keywords: Perimeter, Distance Formula

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3 years ago

Please help!!! Correct answer will get brainliest! A chemist needs 10 liters of a 10% alcohol solution but has only a 25% alcoho

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You must add 15 liters of pure water

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3 years ago

Which series of transformations will not change the coordinates of point N in triangle LMN?

Serga [27]

Answer:

what does that mean

Step-by-step explanation:

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3 years ago

DedPeter [7]

Answer:

The solution is (3/8, -7/8).

Step-by-step explanation:

y = −5x + 1

y = 3x − 2

Since the 2 expressions in x are both equal to y :

−5x + 1 = 3x - 2

-5x - 3x = -2 - 1

-8x = -3

x = 3/8.

So y = 3x - 2

= 3(3/8) - 2

= 9/8 - 2 = -7/8.

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3 years ago

Cot(45-A)=tan2A+ sec2A​

Cot(45-A)=tan2A+ sec2A