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#1 Re: Help Me ! » Finding the length » Yesterday 22:19:11

Hi;

Could be the other way around but the lengths of 9 and 3 are correct.

#11 Re: Help Me ! » Weird Equations from Physics Problems » Yesterday 08:57:06

Eliminate x and solve

or eliminate d and solve,

#22 Re: Help Me ! » lagrangian multiplier » 2015-07-01 18:50:28

Have you tried here first?

http://www.slimy.com/~steuard/teaching/ … range.html

It is usual to begin the study of anything with the simplest examples and problems possible.

I can provide simple but less exciting examples.

#23 Re: Help Me ! » SUPPLEMENTARY and COMPLEMENTARY ANGLES » 2015-07-01 12:18:57

Two angles are called complementary if they add up to 90 degrees.

http://www.mathsisfun.com/geometry/comp … ngles.html

So let us call the second angle b. From the definition we know that a + b = 90. Understand so far?

#24 Re: Help Me ! » SUPPLEMENTARY and COMPLEMENTARY ANGLES » 2015-07-01 11:59:59

How do you do Question 10?

10) a

A90/a
Ba-90
Ca/2
D90-a
E 90-2
F a^2

D) 90 - a, do you see why?

#25 Re: Help Me ! » SUPPLEMENTARY and COMPLEMENTARY ANGLES » 2015-07-01 11:53:48

11. 16,42

A256
B421
C107
D510
E 122
F 329

B for 11 is not correct. The sum of the angles of a triangle is 180 degrees.

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