2 years ago

Is y=-2x linear or non linear

Mathematics

1 answer:

wel2 years ago

6 0

Answer:

Step-by-step explanation:

Iinear

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Prove identity trigonometric equation

irina [24]

Explanation:

The given equation is False, so cannot be proven to be true.

Perhaps you want to prove ...

$2\tan{x}=\dfrac{\cos{x}}{\csc{(x)}-1}+\dfrac{\cos{x}}{\csc{(x)}+1}$

This is one way to show it:

$2\tan{x}=\cos{(x)}\dfrac{(\csc{(x)}+1)+(\csc{(x)}-1)}{(\csc{(x)}-1)(\csc{(x)}+1)}\\\\=\cos{(x)}\dfrac{2\csc{(x)}}{\csc{(x)}^2-1}=2\cos{(x)}\dfrac{\csc{x}}{\cot{(x)}^2}=2\dfrac{\cos{(x)}\sin{(x)}^2}{\cos{(x)}^2\sin{(x)}}\\\\=2\dfrac{\sin{x}}{\cos{x}}\\\\2\tan{x}=2\tan{x}\qquad\text{QED}$

We have used the identities ...

csc = 1/sin

cot = cos/sin

csc^2 -1 = cot^2

tan = sin/cos

4 0

2 years ago

12)

Rina8888 [55]

Answer:

-0.55-0.05

Step-by-step explanation:

When you solve (0.25-0.3)-(0.8-0.25), you get -0.6. -0.55-0.05= -0.6

8 0

3 years ago

What is measure of angle R?

Aleks [24]

The given triangle is a right triangle.
The tangent of an angle of right triangle is obtained by dividing the opposite side of the angle with the adjacent side of the angle.
The opposite side of angle R is 5 cm and the adjacent side of angle R is 12 cm.

tan R = 5 / 12 = 0.4167
R = arctan (0.4167) = 22.6 degrees.

4 0

2 years ago

Find the median of this data: 18, 9, 17, 18, 15, 10, 18. If necessary, round to the nearest tenth.

Marta_Voda [28]

9, 10, 15, 17, 18, 18, 18

17