Which figures are polygons? MORE THAN ONE CORRECT ANSWER please explain

Mathematics

2 answers:

Dahasolnce [82]2 years ago

5 0

Answer:

all of them that have more than 4 sides

pochemuha2 years ago

4 0

Answer: A, B, and C!

Step-by-step explanation: Helped!

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Opposite = 1.5. <br><br>adjacent = 4. <br><br>find the acute angle

guapka [62]

Answer:

Step-by-step explanation:

tanθ = opp/adj

θ = arctan(1.5 / 4)

θ = 20.55604521958346...

θ = 20.6°

7 0

2 years ago

Read 2 more answers

Find the general solution of <img src="https://tex.z-dn.net/?f=2cos%282x%20%2B%20%5Cfrac%7B%5Cpi%20%7D%7B4%7D%20%29%20%3D%20%5Cs

Aleks04 [339]

Answer:

$\large\boxed{x=-\dfrac{\pi}{4}+k\pi\ \text{or}\ x=k\pi\ \text{for}\ k\in\mathbb{Z}}$

Step-by-step explanation:

$2\cos\left(2x+\dfrac{\pi}{4}\right)=\sqrt2\qquad\text{divide both sides by 2}\\\\\cos\left(2x+\dfrac{\pi}{4}\right)=\dfrac{\sqrt2}{2}\to2x+\dfrac{\pi}{4}=\pm\dfrac{\pi}{4}+2k\pi\\\\2x+\dfrac{\pi}{4}=-\dfrac{\pi}{4}+2k\pi\ \vee\ 2x+\dfrac{\pi}{4}=\dfrac{\pi}{4}+2k\pi\qquad\text{subtract}\ \dfrac{\pi}{4}\ \text{from all sides}\\\\2x=-\dfrac{2\pi}{4}+2k\pi\ \vee\ 2x=2k\pi\qquad\text{divide all sides by 2}\\\\x=-\dfrac{\pi}{4}+k\pi\ \vee\ x=k\pi\ \text{for}\ k\in\mathbb{Z}$