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BeauWhen proving an identity, you may manipulate only one side of the equation throughout. You may not use normal algebraic techniques to manipulte both sides. Let's begin with the identity you wish to prove. cos2x - sin2x ?=? 2cos2x - 1 We know that sin2x + cos2x = 1 (Pythagorean Identity). Therefore, sin2x = 1 - cos2x. Substituting for sin2x, we may write cos2x - (1 - cos2x) ?=? 2cos2x - 1 cos2x - 1 + cos2x ?=? 2cos2x - 12cos2x -1 = 2cos2x - 1 The identity is proved. (Note that once the identity is proved, you may remove the question marks from around the equal sign.)
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Prove that 2 divided by10 equals 2?
Cannot prove that 2 divided by 10 equals 2 because it is not true.
How can you prove that 1 plus 1 equals 3?
You can't it equals 2. You can't it equals 2.
Can you mathematically prove 9 plus 10 equals 21?
No you can not prove that 9 +10 = 21.
Love equal what?
No, but there is a way to prove that zero equals one.
How can you prove that 1 equals 3?
Using faulty logic.
How do you prove a0 equals 1?
a0=(a-1\a-1)=a\a=1
Is there any way to prove 7 X 13 equals 28 using 7X7X7... 28?
It is extremely difficult to prove things which are not true.
How can prove that x2 equals 0?
You can't prove it, because it's usually not true.The only time it's true is when x=0 .
How would you prove 1 plus 1 equals 2?
Using a calculator
Which postulate or theorem can be used to prove that XYZ equals LYZ?
AAS (apex)
Determine which postulate or theorem can be used to prove that lmn equals PMN?
SAS
Delta H equals delta E plus delta nRT prove?
Yes
