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2 years ago

If 2tanB+cotB=tanA,then proved that 2tan(A-B)=cotB

Mathematics

1 answer:

Stolb23 [73]2 years ago

6 0

Answer:

it is so hard it's optional math bro I tried much

Step-by-step explanation:

hope others can give answers

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1/(x-2)+1/(x+3)=1/5 solve the problem for me

Gennadij [26K]

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<h3>Final value : x² -9x - 11</h3>

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$\frac{1}{(x - 2)} + \frac{1}{(x + 3)} = \frac{1}{5}$

$\frac{(x + 3) + (x - 2)}{(x - 2)(x + 3)} = \frac{1}{5}$

$\frac{2x + 1}{ {x}^{2} + 3x - 2x - 6 } = \frac{1}{5}$

$\frac{2x + 1}{ {x}^{2} + x - 6} = \frac{1}{5}$

2x + 1 = ⅕ × (x² + x - 6)

2x + 1 = ⅕x² + ⅕x - 6/5

1/5x² +1/5x - 2x - 6/5 - 1 = 0

1/5x² -9/5x - 11/5 = 0

x² - 9x - 11 = 0. #times by 5

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#Give me brainliest pls im tired typing all of this

8 0

3 years ago

sophia had pieces of rope that were 3 1/5 feet long 4.5 feet long and 5 3/10 feet long 4.5 feet long and 5 3/10 feet long what w

Dennis_Churaev [7]

5/9 of a foot

Step-by-step explanation:

Divide 5 by 9 to find the length for 9 equal pieces

6 0

2 years ago

Read 2 more answers

Pls help I don't understand:

sineoko [7]

Answer:

Part a) $T(d)=2d+30$

Part b) $T(6)=42\ minutes$

Step-by-step explanation:

Part a) Write an equation for T (d)

Let

d ----> the number of days

T ---> the time in minutes of the treadmill

we know that

The linear equation in slope intercept form is equal to

$T=md+b$

where

m is the slope or unit rate

b is the y-intercept or initial value

In this problem we have

The slope or unit rate is

$m=2\ \frac{minutes}{day}$

The y-intercept or initial value is

$b=30\ minutes$

substitute

$T(d)=2d+30$

Part b) Find T (6), the minutes he will spend on the treadmill on day 6

For d=6

substitute in the equation and solve for T

$T(6)=2(6)+30$

$T(6)=42\ minutes$

8 0

3 years ago

a hat contains 2 red apples and 3 green apples. a bucket contains 7 red apples and 3 green apples. a container is selected at ra

Leokris [45]

Answer:

Step-by-step explanation:

8 0

3 years ago

Why doesn’t inverse variation have no x and y intercept?

kirill115 [55]

Answer:

Since k is constant, we can find k given any point by multiplying the x-coordinate by the y-coordinate. For example, if y varies inversely as x, and x = 5 when y = 2, then the constant of variation is k = xy = 5(2) = 10. Thus, the equation describing this inverse variation is xy = 10 or y = .

I hope this was the answer u were looking for.

6 0

3 years ago

If 2tanB+cotB=tanA,then proved that 2tan(A-B)=cotB​

If 2tanB+cotB=tanA,then proved that 2tan(A-B)=cotB