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If h is the height, then

h/tan(80°) + h/tan(66°) = 5   so  h = 5/(1/tan(80°) + 1/tan(66°))

The area is just (1/2)*5*h

$${\mathtt{Area}} = {\frac{\left({\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right){\mathtt{\,\times\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{5}}}{\left({\frac{{\mathtt{1}}}{\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}{\left({\mathtt{80}}^\circ\right)}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}{\left({\mathtt{66}}^\circ\right)}}}\right)}} \Rightarrow {\mathtt{Area}} = {\mathtt{20.110\: \!829\: \!461\: \!342\: \!909\: \!5}}$$

Area ≈ 20.11 cm²

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this does not make sense to me. 

That is all really good feedback guys.  :)

solve for distance

Vo= oms per second

acceleration= 2ms per second per second

and time = 3 sec solve for distance

$$\\s=ut+0.5at^2\\
s=0*3+0.5*2*9\\
s=0+9\\
s=9metres$$

or

it is easier to multiply both sides by 8 to start with.   

 Yes.

Most older and internet calcs have an ^ sign

sometimes new calcs have a button that looks like       $$x^y$$      that is the same thing.

Good try anon but not quite right

(-2 + k) + 1

= -2 + k + 1

= k + 1 - 2

= k -1

csc=1.25 what is the value of cos

$$\\cosec\theta = \frac{Hyp}{opp}=\frac{5}{4}\\\\
adj=\sqrt{25-16}=\sqrt{9}=3\\\\
cos\theta = \frac{adj}{Hyp}=\frac{3}{5}=0.6\\\\
$ that is if it is in the 1st quad, but it might be in the 2nd quad$\\\\
cos\theta = \pm\;0.6$$

You don't need to use a calc.  Just move the decimal point over two places to make the number BIGGER.

or any other inverse

your question does no make sense.

Perhaps you mean 0.225 of the walls?  

help you do what?

there is a couple of was but he way that will work in all normal calculators is

$$\sqrt[4]{14}= 14^{1/4}$$

14^(1/4)

$${\frac{{\mathtt{0.11}}}{{\mathtt{4}}}} = {\frac{{\mathtt{11}}}{{\mathtt{400}}}} = {\mathtt{0.027\: \!5}}$$

$$\\a=8435(1+.11/4)^{20}\\
a=8435*(1.0275)^{20}\\$$

so that is going to be 1.0275*1.0275*..........1.0275*8435

there will be 20 lots of 1.0275

It will take a while but you can do it by hand if you want to.   LOL      

The perfect square would have to be even and be of the form (2ⁿ)(2ⁿ) = 2(²ⁿ)

And the prime number would be 2(²ⁿ) - 1

But...it can be shown that for any such prime, the exponent 2n would have to be prime, and this is impossible for n > 1.

So....no such further examples exist......

$$x^2-3x-10<0$$

The easiest way to do these is to think of a the parabola   

$$y=x^2-3x-10\\$$

The above inequality will be true when y is negative.  i.e. the parabola is under the x axis.

This is a concave up parabola because the coefficient of x^2 is positive

So we will need to solve 

$$\\x^2-3x-10=0\\
(x-5)(x+2)=0\\
x=5,\;\;x=-2\\$$

since the paraola is concave up, the bit under the x axis is between these two roots.

so

$$\\x^2-3x-10<0\\
When\;\;-2

We have

tan(43) = h / 54    where h is the height of the painting above the platform

Rearrange

54 tan(43) = about 50.36 ft

For the first one we have

tan(50) = 3.2 / d   where d is the distance from the wall

Rearrange

d = 3.2 / tan (50)  = about 2.69 m

We can use the Pythagorean Theorem for the second

√[3.2^2 + 2.69^2] = about 4.8 m

its the "2nd" button. or just hold shift.

2, or a song by beyonce

in the calculator: press a number, the + sign, and then the number you want to add to the first number. then hit enter.

in real life:

all you need to know is the digits:
0 1 2 3 4 5 6 7 8 9 in that order.
1 is the unit, the most important part. (addition is just repeated units). 2 equals 1 and 1, 3 equals 1 and 1 and 1, 4 equals 1 and 1 and 1 and 1, and it continues in that pattern. remember this, its also important.
0 is equal to having no 1s.

when you add 1 and 1, you get 2. but what if you add 2 and 1?

well, 2 just equals 1 and 1, so adding 2 and 1 is the same as adding 1 and 1 and 1.
1 and 1 and 1 equals 3, so 2 added to 1 equals 3.

it is more commonly known as "plus" or "+"
for example, "1 plus 1 is 2" or "1 + 1 is 2"

once you reach 0 (1 1 1 1 1 1 1 1 1), you may wonder

Whats nine plus one?
when you get to nine, the next number is just 0 again.
however, you add 1 to the left of it.
9 + 1 is 10
10 + 1 is 11
11 + 1 is 12... and it continues to 19.

19 + 1 is 20.
29 + 1 is 30.

and it continues on
99 + 1 is 100.
100 + 1 is 101.

of course there are numbers in between and beyond those ones but im sure you understand that i dont have
time to list every number, which there are an endless supply of.

hopefully this helps.
Happy adding!

2yolo, or two times yolo. any number added to itself is equal to that number multiplied by the amount of time it was added.

or if youre feeling like a jokester it can equal yolt (you only live twice)

it does math equations

for example, if you wanted to know what adding the number to itself ten times would equal but you didnt want/need to keep adding five to itself, you would input into the calculator $${\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{10}}$$ and hit enter, it would give you the answer (fifty, by the way.)

its $${\mathtt{2.48}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{-{\mathtt{3}}}$$ . negative exponents work like this: $${{\mathtt{x}}}^{{\mathtt{\,-\,}}{\mathtt{y}}} = {\frac{{\mathtt{1}}}{{{\mathtt{x}}}^{{\mathtt{y}}}}}$$ that is, x to the power of negative y equals 1 divided by x to the yth blah blah.

$${\frac{{\mathtt{1}}}{\left({\mathtt{2.48}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{3}}}\right)}} = {\mathtt{0.002\: \!48}}$$

as for why it isnt $${\mathtt{248}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{-{\mathtt{5}}}$$ even though its the same value:

the rule for scientific notation is that the number being multiplied by $${{\mathtt{10}}}^{{\mathtt{something}}}$$ is supposed to be equal to or greater than 1 [i think] but less than 10 [im sure of this part].

hope this helps