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3 years ago

What is the precise definition of an angle?

2 answers:

7 0

We call "angle" the two portions of the plane included between to rays (or half lines) that share the same origin (vertex).

Dmitriy789 [7]3 years ago

6 0

<span>The space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.</span>

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Work out the angle of elevation from the

insens350 [35]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \:Angle \:\: of \:\: elevation= 30°$

____________________________________

$\large \tt Solution \: :$

Let the angle of elevation be " x "

$\qquad \tt \rightarrow \: \cos(x) = \dfrac{9 \sqrt{3} }{18}$

$\qquad \tt \rightarrow \: \cos(x) = \dfrac{ \sqrt{3} }{2}$

$\qquad \tt \rightarrow \: x = \cos {}^{ - 1} \bigg( \cfrac{ \sqrt{3} }{2} \bigg )$

$\qquad \tt \rightarrow \: x = 30 \degree \: \: or \: \: \cfrac{ \pi}{6} \: \: rad$

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

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2 years ago

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andrey2020 [161]

Here, use the app photomath.

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3 years ago

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Given the function: f(x) = 2x3 - 3/2x, find f(-4).

Sergeu [11.5K]

Answer:

D) -122

Step-by-step explanation:

Given:

$f(x) = 2x^3-\frac{3}2x$

We need to find f(-4).

Now by substituting the value of x =-4 in above equation we get;

$f(-4)= 2\times(-4)^3-\frac{3}{2}\times(-4)\\$

By using PEDMAS we will solve for exponential function first we get;

Now we know that $(-4)^3=-64$

So we get;

$f(-4)= 2\times(-64)-\frac{3}{2}\times(-4)\\$

Now using PEDMAS we will solve division.

$f(-4)= 2\times(-64)-1.5\times(-4)$

Now using PEDMAS we solve multiplication.

$f(-4)= -128+6$

Finally by subtraction we get;

$f(-4)= -122$

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3 years ago

V=r^2+R^2h; Solve for R

Ne4ueva [31]

Solve for R by simplifying both sides of the equation, the isolating the variable.
R^2h=-r^2+v

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3 years ago

In the Olympics, the athlete received an 85% score on the compulsory exercises, which are weighted 60%. In the optional round, w

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3 years ago