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3 years ago

If sec 2A = 1/sin 13A, determine the angle A in degrees.

1 answer:

8 0

Sec 2 A = 1 / cos 2 A
1 / cos 2 A = 1 / sin 13 A
cos 2 A = sin 13 A
2 A = 90° - 13 A
2 A + 13 A = 90°
15 A = 90°
A = 90° : 15
Answer:
B ) A = 6°

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ikadub [295]

Answer:

a) False

b) False

Step-by-step explanation:

We are given the following information:

Z is a set of all integers, $Z^+$ is a set of all positive integers and $Z^-$ is a set of all negative integers.

Q is a set of all rational numbers, $Q^+$ is a set of all positive rational numbers and $Q^-$ is a set of all negative rational numbers.

N is a set of all natural numbers.

a) False

We will show this with the help of a counter example.

$Z = 3\\Q = \frac{3}{4}\\\displaystyle\frac{Z}{Q} = \displaystyle\frac{3}{\frac{3}{4}} = \displaystyle\frac{8}{3}$

which is a rational number and not an integer.

b) False

We will show this with the help of a counter example.

$Z = 3\\Z^- = -5\\\displaystyle\frac{Z}{Z^-} = \displaystyle\frac{3}{-5} = -\displaystyle\frac{3}{5}$

which is a rational number and not a natural number.

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3 years ago

Rewrite using associative property of addition: (x + 2) + y

creativ13 [48]

Answer:

the circle of life

Step-by-step explanation:

ik it fools us all

5 0

4 years ago

While waiting for a video game to download, you notice that 30%, percent of 32,000 kilobytes have been downloaded so far.

Mamont248 [21]

Answer:

9600

Step-by-step explanation:

30% can also be written as 0.3 so 0.3×32000 is 9600. 9600 kilobytes have been downloaded so far

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2 years ago

Write an equation of the line in point-slope form that passes through the given points.

RSB [31]

Answer:

Step-by-step explanation:

point - slope formula: y - y1 = m(x-x1)

we need to find the slope ... or what is m ?

m = rise / run

m = y2 - y1 / x2 - x1

where the given points are (x1,y1) and (x2,y2)

m= 7-5 / 6-5

m = 2 / 1

m =2

now use either point and plug the slope and the point into the point-slope formula

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3 years ago

In the diagram below, BD is parallel to XY. What is the value of y?

Fudgin [204]

Answer:

y=97

Step-by-step explanation:

180-83=97

7 0

3 years ago

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