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timama [110]
3 years ago
5

Help me please i dont understand

Mathematics
1 answer:
AfilCa [17]3 years ago
8 0
So since they mentioned tangent I am guessing you need to use sin and cosine.

Usually we use sin, cosine and tan when we have an angle and we need to find one of the sides (look at the picture below)

But since now we have the sides and we need to find the angle, we need to use something called sin inverse or arcsin.

X=sin^-1 (6/14)

Note: sin^-1 is the same as saying sine inverse same as saying arcsin.

If we use this it will give us the required angle..

X=25.377 or X=25.4 degrees

Please do yourself a favour and compare it to the one below...finding the sides (because in the case we have the angle and not the sides we don’t use sine inverse)

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Answer:

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Step-by-step explanation:

A triangle is a three sided polygon with three edges and three vertices

There are different types of triangles. They include :

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Area of a triangle = 1/2 x ( base x height)

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3 years ago
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Answer:

Step-by-step explanation:

First and foremost, all quadratics have a domain of all real numbers (as long as we are not given only a portion of the graph, or one with endpoints. Our graph does not have endpoints, so it is assumed that the tails will continue to go down into negative infinity and at the same time, the x coordinates will keep growing as well.) Since our quadratic is upside down, it has a max. That means that none of the values on the graph will be above that point. All the values will be below that highest point (the highest y-value). Y-values indicate range, and since our highest y-value is at y = 2, then the range is

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3 years ago
How many different arrangements can be made with ten pieces of silverware laid in a row if three are identical spoons, four are
LuckyWell [14K]

10 pieces of silverware laid in a row if 3 are identical spoons, 4 are identical forks, and 3 are identical knifes

The arrangement of 'm' objects on which 'n' objects are of same kind is \frac{m!}{n!}

Given: 10 pieces of silverware so its 10!

3 are identical spoons so its 3!

4 are identical forks so its 4!

and 3 are identical knifes so its 3!

Arrangements made = \frac{10!}{3!*4!*3!} = 4200




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