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3 years ago

3. Describe the solution to the equation.

Mathematics

1 answer:

Law Incorporation [45]3 years ago

4 0

I don’t really know? What grade is this?

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If (sin(()−1))p =2cos(()−1)q , show that p^2 =4q^2 (1− q^2) ?.

Papessa [141]

Likely the equation is

$\sin^{-1}p=2\cos^{-1}q$

For either side to be defined, we require $|p|\le1$ and $|q|\le1$ . Under these conditions, we can take

$\sin(\sin^{1}p)=\sin(2\cos^{-1}q)$
$\implies p=2\sin(\cos^{-1}q)\cos(\cos^{-1}q)$
$\implies p=2q\sin(\cos^{-1}q)$
$\implies p=2q\sqrt{1-q^2}$
$\implies p^2=4q^2(1-q^2)$

as required.

8 0

4 years ago

220 student enter a spelling bee after the first round 40 students were eliminated there will be 180 students competing in round

solniwko [45]

Initial number of students: 220

Final number of students : 180

Multiply the initial number of students (220) by the percentage change in decimal form (divided by 100) - That expression must be equal to 180.

220 x = 180

Solve for x:

x=180/220

x= 0.818181

multiply by 100

81,81 %

100%-81,81% = 18.18%

Percent change: 18.18%

3 0

1 year ago

BCDE is a rectangle.

anastassius [24]

Answer:

x = 220°

Step-by-step explanation:

∠AEB = ∠ABE = (180 - 80) /2 = 50 (isosceles triangle property)

∠BED = 90

x = 360 - 90 - 50 =220

8 0

3 years ago

Find missing angleeeeeeeeeeeeeeeeeeeeeeee

dimulka [17.4K]

Answer:

C) 80

Step-by-step explanation:

triangles always add up to 180 degrees, so 80+20=100 the missing angle is 80 degrees

4 0

3 years ago

please help me! and please do not guess or just say something to take points bc i will make sure your account gets deleted. than

Gwar [14]

Answer:

1. 3.

Step-by-step explanation:

The answer to tx2x365 is 730t so when you solve the others you also get 730t

4 0

3 years ago

Read 2 more answers