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3 years ago

1+sin^2 x = 2-cos^2 x

Mathematics

1 answer:

Alinara [238K]3 years ago

3 0

1+sin²x=2-cos²x
Remenber: sin²x+cos²x=1 ⇒sin²x=1-cos²x

1+sin²x=1+(1-cos²x)=2-cos² x (this is true)

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HELPPPPPPPPPPPPPPPPPP

Annette [7]

Answer:

The equation of line in the form of Ax + By = C is: $\mathbf{4x+y=-17}$

Step-by-step explanation:

We need to find the equation of line, having slope m = -4 and passes through point (-2,-9)

First we need to find slope and y-intercept of the line.

The slope is given i.e. m = -4

Now, we need to find the y-intercept

Using the point (-2,-9) and slope m = -4, y-intercept can be found using:

$y=mx+b\\-9=-4(-2)+b\\-9=8+b\\b=-9-8\\b=-17$

Now, the equation of required line having slope m = -4 and y-intercept b = -17 is:

$y=mx+b\\y=-4x-17$

Now writing in form of Ax + By = C

$y=-4x-17\\4x+y=-17$

So, the equation of line in the form of Ax + By = C is: $\mathbf{4x+y=-17}$ .

5 0

3 years ago

What is 24 percent of 25

Mkey [24]

24% = $\frac{24}{100}$

multiply 25 by this fraction

25 × $\frac{24}{100}$ = $\frac{25(24)}{100}$ = 6

4 0

3 years ago

Consider the function represented by 9x+3y= 12 with x as the independent variable. How can this function be written using

kozerog [31]

Answer:

f(x) = - 3x + 4

Step-by-step explanation:

Given

9x + 3y = 12

We require to rearrange expressing y in terms of x

Subtract 9x from both sides

3y = - 9x + 12 ( divide all terms by 3 )

y = - 3x + 4

Expressed in functional notation by replacing y by f(x), that is

f(x) = - 3x + 4

8 0

3 years ago

Please help with this simple question!!!

strojnjashka [21]

456- 12= 444
37×12= 444
=12

7 0

3 years ago

Someone please help! I gave this extra points because the question has a picture. I will give thanks and 5 star for any answer.

tiny-mole [99]

Answer:

53°

Step-by-step explanation:

x + (2x + 21) = 180

(Corresponding angles &

Supplementary angles)

3x + 21 = 180

3x = 159

x = 53°

7 0

3 years ago