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Mathematics

1 answer:

Eduardwww [97]3 years ago

8 0

The distance from the origin is a.

Step-by-step explanation:

If the point is located at the coordinate $(a\cos \alpha, a\sin \alpha)$ , then its distance from the origin is given by

$r = \sqrt{x^2 + y^2} = \sqrt{(a\cos \alpha)^2 + (a\sin \alpha)^2}$

$\:\:\:\:=\sqrt{a^2(\cos^2\alpha + \sin^2 \alpha)}$

$\:\:\:\:= a$

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Akimi4 [234]

Answer:

s = 17

Step-by-step explanation:

Using the tangent ratio in the right triangle and the exact value

tan60° = $\sqrt{3}$ , then

tan60° = $\frac{opposite}{adjacent}$ = $\frac{17\sqrt{3} }{s}$ = $\sqrt{3}$ ( multiply both sides by s )

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3 years ago

To obtain the number of centimeters from a distance measured in meters, move the decimal point _____.two places righttwo places

castortr0y [4]

The answer is the second option: Two places left.

Therefore, the complete text is: "To obtain the number of centimeters from a distance measured in meters, move the decimal point Two places left ".

The explanation is:

1 meter has 100 centimeters, then, if you have a distance of 45.55 centimeters and you want to know this value in meters, you need to divide it by 100 or, in others words, you need to move the decimal point two places left:

=(45.55 centimeters)(1 meter/100 centimeters)
=(45.55x1)/100
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3 years ago

An object travels along a horizontal straight path at a constant rate the object travels 1/20 of the length of the path in 3/4 s

Eduardwww [97]

Answer:

15 seconds

Step-by-step explanation:

Simply assume that total length to be covered be 'L'.

Now , $\frac{1}{20}$ of total length L is covered in time $\frac{3}{4}seconds$ .