Proofs

Trigonometry

Top Answer

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sin^2x + cos^2x = 1=> sin^2x = 1 - cos^x = (1 + cosx)(1 - cosx)

Divide both sides by sinx (assuming that sinx is not zero).

=> sinx = (1 + cosx)(1 - cosx)/sinx

Divide both sides by (1 - cosx)

=> sinx/(1 - cosx) = (1 + cosx)/sinx

=> sinx/(1 - cosx) - (1 + cosx)/sinx = 0

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0It is called an equation, more specifically x = 34/2 is an algebraic equation where x = 17.

which number makes this equation true 63 divided something = 7

There cannot be an equation because there is no "equals".

A equals Vf minus Vi divided by time equals triangle v divided by time

In the equation: F is force, m is mass, and a is acceleration. Divide both sides by a, and you have:m = F/a, which is Force divided by acceleration.

36 divided by 9 equals 4

There are no "following" data!

Solve the following equation for A : 2A/3 = 8 + 4A

This is not an equation. It's a division problem.2,640 / 20 = 132

An equation where x = -20

279 divided by 8 equals 34.875. This equation does not yield an answer without a remainder.

An equation where c = -86

204 divided by 2 is 102

You have not given us an equation, just a term, x + 6. Every equation states that some quantity is equal to some other quantity, and this is shown by means of the equals sign (=). An example of this might be, x + 6 = 10. If that was the equation, then x = 4.

Which of the following is the best translation of this equation?

Not exactly. They serve the same purpose, but calulated a little bit differently. Slope equals change in price divided by change in quantity. Elasticity equals changes in quantity to be divided by changes in price

3x = x / 6 is not a valid equation. It is equivalent to saying "3 = 6"

v=m/d volume equals mass divided by density

x/7 = 14 x = 98

The d stands for distance.

You cannot because it is not true.

It is a linear equation in a single variable, p.

The slope of the line that represents the graph of that equation is 15.

That's the reflexive property of equality.

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