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3 years ago

Quick help with answers please!!

Mathematics

1 answer:

yulyashka [42]3 years ago

6 0

Answer:

x=pi/8 and 7pi/8

Step-by-step explanation:

2cos(2x)=sqrt(2), cos(2x)=1/sqrt(2). 2x=pi/4 and 7pi/4, x=pi/8 and 7pi/8

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Find the quotient. Please help just tell me what write in boxes

Veronika [31]

Answer:

16.4

Step-by-step explanation:

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3 years ago

What is the polar form of -3+ v3i?

Softa [21]

z=-3+√3i
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$\\ \rm\Rrightarrow r=\sqrt{a^2+b^2}$

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$\\ \rm\Rrightarrow r=\sqrt{12}$

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$\\ \rm\Rrightarrow \theta=tan^{-1}(\dfrac{\sqrt{3}}{3})$

$\\ \rm\Rrightarrow \theta=tan^{-1}(\dfrac{-1}{\sqrt{3}})$

$\\ \rm\Rrightarrow \theta=\dfrac{5\pi}{6}$

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$\\ \rm\Rrightarrow r(cos\theta+isin\theta)$

$\\ \rm\Rrightarrow 2\sqrt{3}(cos\dfrac{5\pi}{6}+isin\dfrac{5\pi}{6})$

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2 years ago

3. Is AABC a right triangle? Explain

lukranit [14]

Answer:

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Step-by-step explanation:

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3 years ago

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I need help w this, thanks

Rama09 [41]

60 I believe I hope this helps if it was right :)

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