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Lady_Fox [76]
3 years ago
13

(2-cos^2A)(1+2cot^2A)=(2+Cot^2A)(2-sin^2A)​

Mathematics
1 answer:
fomenos3 years ago
7 0

Answer:

2 sin (2A) cos (2A)^4 + 2cos (2A)

---------------------------------------------------

                 sin (2A)

Step-by-step explanation:

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gayaneshka [121]

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I need help with this.​
SOVA2 [1]

Answer:

x + (3x - 9) = 5x - 30 \\ x + 3x - 9 = 5x - 30 \\ 4x - 9 = 5 x - 30 \\  - 9 + 30 = 5x - 4x \\ 21 = x \\ so..value \: of \: x \: is \: 21 \\ so. \\

<ACB = 105°

<h2>it is correct✅ ans. </h2>

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<h3>plazzz mark is as a brilliant ans</h3>
6 0
3 years ago
Write the quadratic equation whose roots are 3 and -5, and whose leading coefficient is 2.
Rainbow [258]

\begin{cases} x=3\implies &x-3=0\\ x=-5\implies &x+5=0 \end{cases}\qquad \implies\qquad a(x-3)(x+5)=\stackrel{0}{y} \\\\\\ a(\stackrel{F~O~I~L}{x^2+2x-15})=y\implies \stackrel{\textit{leading coefficient of 2}}{2(x^2+2x-15)}=y\implies 2x^2+4x-30=y

Check the picture below.

5 0
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