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We know an angle, an adjacent side, and we're looking for the opposite side.....so the tangent seems appropriate....and we have

tan (25)  = opp/ 235   multiply both sides by 235

235 * tan (25)  = opp  =  height  of cliff  ≈ 109.6 m

It is a trig question. 

Draw the triangle

Put 25 degrees and 235m in the correct places.

Call the height y      (h for height could be confused with hypotenuse)

Mark the opp, adj and hyp sides

Choose the correct trig function and solve.

If you have specific problems then explain what they are.

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Oh and do not double post just cause you do not get an immediate answer!!

Why is it urgent?

Is it perhaps because you are a rude and demanding person?

Thanks Hectictar, I did not see that post you were answering. 

I must have had my eyes shut at the time LOL  :))

Welcome to the forum "2hot"

Don't worry about people who are rude to you. You always get some of those on forums. 

It is good to appologise sometimes, but when people are really rude to you it is better to just totally ignore them.  :)

I'm sorry. I was gonna put it in the question but I was really busy at the time and since I put it as a response I thought that would be enough. Pls forgive me.

Thank you so much Hectictar. I do home schooling and my pace work doesn't explain it very well. THANK YOU.

It was a response to the second comment:

" Hey, thx for the answer but its not fitting the problem. I have to calculate the Surface area of a regular pyramid. the length is 12cm the slant height is 14 cm. so my problem is 1/2 (12) (14) +144 = 480, but I can't seem to solve it. "

Hectictar....

I do not understand what you answer has to do with the question? ,,,,,

This meets the percentage axes at 42%   (for males)

Not done yet. Maybe later when I have more time unless someone else does it first :)

Here is a picture of a pyramid with its lateral faces laid out.

Remember, you need to get the areas of all four triangles, not just one!

surface area  =  ( 1/2 )( perimeter of base )( slant height )  +  ( area of base )

                      =  ( 1/2 )( 12 * 4 )( 14 )  +  ( 12 * 12 )

                      =  ( 1/2 )( 48 )( 14 )  +  144

                      =  336  +  144

                      =  480                        

360 NO SCOPE!

Hey, thx for the answer but its not fitting the problem. I have to calculate the Surface area of a regular pyramid. the length is 12cm the slant height is 14 cm. so my problem is 1/2 (12) (14) +144 = 480, but I can't seem to solve it.

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(1/2) (12) (14)  =

6 * 14  =

84

\(2*23*5^2=1150\)

Something like this  ?

0.05  =   5/100  =   1 /20

or

0.435   =  435/1000  =  87 / 200

g(x) = x/5 + 1

Write as

y   = x/5 + 1    subtract 1 from each side

y - 1  = x/5     multiply both sides by 5

5 ( y - 1)  = x   simplify

5y  - 5   =  x        "swap"   x and y

5x - 5  = y           for y, write  g^-1 (x)

5x - 5  =    g^-1 (x)

f(x) = 3(x – 4)

f [f(x)]=3 [3(x – 4) -4]

=3(3x-12-4)

=3(3x-16)

=9x-48

im looking for help on finding the local minimum and maximum of a function as well as the point of inflection

A minimum or maximum will be either at the ends of the domain. I mean where x is smalles and biggest OR

where the gradient of the tangent to the curve is 0. The gradient of the tangent is given by the first derivative. so y'=0  will give you the x value of the turning points. You have to plug that value back into the original equation to find y.

Points or inflection are where the concavit changes. This is where y''=0