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3 years ago

Giving brainliest !!!!!

Mathematics

1 answer:

8_murik_8 [283]3 years ago

5 0

Answer:

Angle 10=74 deg

Alternate Interior angle theorem

Step-by-step explanation:

They are Alternate Interior angles.

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Find the measures of a right triangle with one angle whose measure is 30

Zarrin [17]

Answer:

The other measure is 60º

Step-by-step explanation:

a triangle= 180º total

a right triangle has one 90º angle

there is a 30º angle given

180-90=90

90-30=60

so 60º

7 0

3 years ago

Please answer, thank you

JulijaS [17]

Answer:

C) 5

Step-by-step explanation:

5 0

3 years ago

I don’t know how to solve this

Lady_Fox [76]

Answer:

$\theta =2\pi k,\ \ k\in Z\ \\\text{or}\ \\\theta=-\dfrac{2\pi}{3}+2\pi k,\ \ k\in Z$

Step-by-step explanation:

Given:

$\cos \theta-\sqrt{3}\sin \theta=1$

Divide this equation by 2:

$\dfrac{1}{2}\cos \theta-\dfrac{\sqrt{3}}{2}\sin \theta=\dfrac{1}{2}$

Note that

$\cos \dfrac{\pi }{3}=\dfrac{1}{2}\\ \\\sin \dfrac{\pi }{3}=\dfrac{\sqrt{3}}{2}$

So, the previous equation is

$\cos \dfrac{\pi}{3}\cdot \cos \theta-\sin \dfrac{\pi}{3}\cdot \sin \theta=\dfrac{1}{2}$

Remind that

$\cos x\cos y-\sin x\sin y=\cos (x+y),$

then

$\cos \left(\dfrac{\pi}{3}+\theta\right)=\dfrac{1}{2}$

The solution of this equation is

$\dfrac{\pi}{3}+\theta=\pm \arccos \dfrac{1}{2}+2\pi k,\ \ k\in Z\\ \\\dfrac{\pi}{3}+\theta=\pm \dfrac{\pi}{3}+2\pi k,\ \ k\in Z\\ \\\theta =2\pi k,\ \ k\in Z\ \text{or}\ \theta=-\dfrac{2\pi}{3}+2\pi k,\ \ k\in Z$

8 0

3 years ago

Dana is riding her bike. She rides 20 miles in 2 hours, 30 miles in 3 hours, and 40 miles in 4 hours. Find the constant of prop

AnnyKZ [126]

10. 20/2 = 10
30/3=10
40/4=10

Y=10x

5 0

3 years ago

Find the slope of the line that passes through these given points (-4,3) and (1,1)

wel

Answer:

-2/5

Step-by-step explanation:

Slope is given by rise/run also known as y2-y1/x2-x1. --3 = -2, and 1 - (-4) = 5 hence -2/5.

3 0

3 years ago