They cannot exist alone.

*.*

**They need partners**For "cos", it needs angle.

For "log", it requires a number.

They operate on something.

So what is their difference since they are both operators?

"cos" changes

**angle**information to

**number**(ratio).

"log" operates on

**number**to get another

**number**.

Their applications, thus, differ in the above matter.

NOTE: "cos" here refers to any trigonometrical functions.

"cos" is useful in getting length or angle information.

"log" can be used to find the value of the power needed.

Example: To find 2

^{x}= 5

Knowing the various mathematical tools, we can apply the correct ones to solve specific problems.

Without understanding the underlying usage and concepts, we will be at a lost to which tools to use.

Math is, therefore, wider in nature than just calculation.

Keep learning....

:-)

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