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4 years ago

If c=25 and B=75 degrees, find a. Round to the nearest tenth.

Mathematics

1 answer:

worty [1.4K]4 years ago

5 0

Answer:

a=6.9

Step-by-step explanation:

Since you know that C is a right angle, you can use the Law of Sines to find a. The first step is to find the size of the angle A, which is 180-74-90=16. Now, you set up a ratio that involves 3 knowns and one unknown to get $\frac{\sin(90^\circ)}{25} = \frac{\sin(16^\circ)}{a}$ , which after cross multiplying yields $a=\sin(16^\circ)\cdot25\approx 6.9$ . PM me if you have any questions?

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a square and rectangle are shown below the width of the rectangle is the same length at a side of the square both represented by

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Answer:

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Step-by-step explanation:

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3 years ago

A bag contains 3 red marbles and 4 blue marbles.

brilliants [131]

It really should be 2/7.

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3 years ago

Tan theta * tan 2theta = 1, cos 2theta =?

lilavasa [31]

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3 years ago

The sum of 3 times a number and 7, divided by 5, is 17 written as an equation

Anestetic [448]

Equation is: $\frac{3x+7}{5}=15$

and Value of x is $x=68/3\\$

Step-by-step explanation:

We need to write an equation of:

The sum of 3 times a number and 7, divided by 5, is 17

Let the number = x

So, equation will be:

$\frac{3x+7}{5}=15$

We can solve the equation to find the value of x.

$\frac{3x+7}{5}=15\\3x+7=15*5\\3x+7=75\\3x=75-7\\3x=68\\x=68/3\\$

So, Equation is: $\frac{3x+7}{5}=15$

and Value of x is $x=68/3\\$

Keywords: Write equation from sentence

Learn more about Write equation from sentence at:

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3 years ago

A radio telescope has a parabolic surface. If it is 1m deep and 16m wide how far is the focus from the vertex?

Mrac [35]

Basing on the description, a parabola opening up with vertex at origin, the formula with vertex at origin is used, x^2 = 4py. p is the focus and so with the dimensions given, we obtain a 0.25 and that is the distance of the focus to the vertex.

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3 years ago