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nadezda [96]
2 years ago
6

Prove that is here

20%7B2%7D%20a" id="TexFormula1" title="1 - cos {2}a \div 1 - sin a{2} = tan {2} a" alt="1 - cos {2}a \div 1 - sin a{2} = tan {2} a" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
garri49 [273]2 years ago
8 0

\\ \sf\longmapsto \dfrac{1-cos2A}{1-sin2A}

<h3>LHS</h3>

\boxed{\sf \dfrac{cosA}{sinA}=cotA}

\\ \sf\longmapsto \dfrac{1-cos2A}{1-sin2A}

\\ \sf\longmapsto 1-cot2A

\\ \sf\longmapsto 1-\dfrac{1}{tan2A}

\\ \sf\longmapsto \dfrac{tan2A-1}{tan2A}

\\ \sf\longmapsto tan2A

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A container holds 5L of fluid. Does it hold more than or less than 500mL of fluid
Yuri [45]

There are 1000 mL in one liter, so there are 5000 Ml in the 5 L container. thus, it holds more than the 500 mL container. 
7 0
3 years ago
At one​ store, Julia saved ​$10 with a coupon for 40​% off her total purchase. At another​ store, the ​$29 she spent on books is
barxatty [35]
Let "a" and "b" represent the values of the first and second purchases, respectively.
  0.40*(original price of "a") = $10
  (original price of "a") = $10/0.40 = $25.00 . . . . divide by 0.40 and evaluate
  a = (original price of "a") - $10 . . . . . . Julia paid the price after the discount
  a = $25.00 -10.00 = $15.00

At the other store,
  $29 = 0.58b
  $29/0.58 = b = $50 . . . . . . . divide by the coefficient of b and evaluate

Then Julia's total spending is
  a + b = $15.00 +50.00 = $65.00

Julia spent $65 in all at the two stores.
6 0
3 years ago
Find the equation of a line that contains the points (−3,−1) and (−4,−7). Write the equation in slope-intercept form
BARSIC [14]

Answer:

y =6x+17

Step-by-step explanation:

First we need to find the slope

m = (y2-y1)/(x2-x1)

   = (-7- -1)/(-4 - -3)

   = (-7+1)/(-4+3)

   -6/-1

   6

The slope intercept form of the equation is

y = mx+b  where m is the slope and b is the y intercept

y = 6x+b

Substitute a point into the equation

-1 = 6(-3) +b

-1 = -18+b

Add 18 to each side

17 =b

The equation is

y =6x+17

8 0
3 years ago
Find the image of the given point
saul85 [17]

Answer:

Step-by-step explanation:

p(-3,-3)

here x is -3 and y is also -3 so

p(-3,-3)=p'(x-8,y-3

=p'(-3-8,-3-3)

=p'(-11,0)

4 0
2 years ago
Round 8.61 to the nearest tenth.
maks197457 [2]
8.6 first number after the decimal is the tenths place then the second number after the decimal is the hundredths
5 0
2 years ago
Read 2 more answers
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