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3 years ago

Ravi says the value of tan0 degrees.tan1 degree.tan2 degree.......tan 89 degree is zero. Do you agree with Ravi ?give reason

Mathematics

1 answer:

Elan Coil [88]3 years ago

4 0

Answer:

Yes

Step-by-step explanation:

Given

$tan(0).tan(1).tan(2).......tan(89) = 0$

Required

True or false? With reason

The expression is true and the reason is as follows.

In trigonometry:

$tan(0) = 0$

So:

$tan(0).tan(1).tan(2).......tan(89) = 0$

is equivalent to:

$0 * [tan(1).tan(2).......tan(89)] = 0$

When 0 is multiplied to an expression, the result is 0

So, the above expression becomes:

$0 = 0$

Since both sides of the equation are equal, then Ravi is correct

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Answer:

I am pretty sure $750

Step-by-step explanation:

Since there are 10 slices of cake, you would have to divded the cost ($2,500) by 10 to find out the cost per slice (you would get $250). Since we are finding the cost of 3 slices, you would mulitply 250 by 3, then you get your answer

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3 years ago

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3 years ago

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4 years ago

Dwayne drove 18 miles to the airport to pick up his father and then returned home. On the return trip he was able to drive an av

Nesterboy [21]

Answer:

30 mph

Step-by-step explanation:

Let d = distance (in miles)

Let t = time (in hours)

Let v = average speed driving to the airport (in mph)

⇒ v + 15 = average speed driving from the airport (in mph)

Using: distance = speed x time

$\implies t=\dfrac{d}{v}$

Create two equations for the journey to and from the airport, given that the distance one way is 18 miles:

$\implies t=\dfrac{18}{v} \ \ \textsf{and} \ \ t=\dfrac{18}{v+15}$

We are told that the total driving time is 1 hour, so the sum of these expressions equals 1 hour:

$\implies \dfrac{18}{v} +\dfrac{18}{v+15}=1$

Now all we have to do is solve the equation for v:

$\implies \dfrac{18(v+15)}{v(v+15)} +\dfrac{18v}{v(v+15)}=1$

$\implies \dfrac{18(v+15)+18v}{v(v+15)}=1$

$\implies 18(v+15)+18v=v(v+15)$

$\implies 18v+270+18v=v^2+15v$

$\implies v^2-21v-270=0$

$\implies (v-30)(v+9)=0$

$\implies v=30, v=-9$

As v is positive, v = 30 only

So the average speed driving to the airport was 30 mph

(and the average speed driving from the airport was 45 mph)

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2 years ago

Read 2 more answers

What is the measurement of 6? A) 45° B) 54° C) 117° D) 126°

Arlecino [84]

Answer:

A.) 45*

Hope this helps!

Step-by-step explanation:

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3 years ago

Ravi says the value of tan0 degrees.tan1 degree.tan2 degree.......tan 89 degree is zero. Do you agree with Ravi ?give reason​

Ravi says the value of tan0 degrees.tan1 degree.tan2 degree.......tan 89 degree is zero. Do you agree with Ravi ?give reason