Most people study mathematics in their various institutions and secondary school and solve a lot of unknown equations, mathematical problems but yet they don't know the abbreviations attached to what they solve.

That is the reason I will list out important abbreviations you all need to know about why solving this wonderful mathematics.

Below are the important abbreviations;

1. BODMAS - Bracket Of Division, Multiplication, Addition and Subtraction.

2. BIDMAS - Bracket of Indices, Division, Multiplication, Addition and Subtraction.

3. Cos - Cosine:

It is a basis of trigonometry where two right triangles have equal acute angles and are similar, so that their side lengths are proportional.

4. Adj - Adjugate:

When you learn linear algebra, the adjugate or adjoint of a square matrix is the transpose of its cofactor matrix. But, "adjoint" of a matrix now refers to its corresponding adjoint operator, which is known as the conjugate transpose.

5. Cosh - Cosine Of Hyperbolic Functions:

In mathematics, hyperbolic functions are analogs of the ordinary trigonometric functions.

6. Grad - Gradient

It is known as the direction of greatest change of a scalar function.

7. Var - Variance:

It is the expectation of the squared deviation of a random variable from its mean.

8. Tan - Tangent:

It is also a basis of trigonometry just like sine and cosine that involves two right triangles that have equal acute angles and are similar then their side lengths are proportional.

9. RHS - Right Hand Side:

It is the right side of an equation that is given to you to simplify.

10. LHS - Left Hand Side:

It is the left side of an equation that is given to you to simplify.

11. Log - Logarithm

It is the inverse function to exponentiation meaning that, the logarithm of a given number x is the exponent to which another fixed number, the base b, must be raised, to produce that number x.

12. Iff - If and Only If:

It is a mathematical expression used as a biconditional logical connective between statements, where either both statements are true or both are false.

13. RMS - Root Mean Square.

14. Sin - Sine

It is a basis of trigonometry too.

15. Eqn - Equation.

Whatsapp is one of the most popular instant messaging apps across countries in the world. The Facebook-owned platform has more than Two billion users and offers end-to-end chatting experience.

However, hackers only need a phone registered with a Whatsapp account to dupe users into a variety of scams including sharing their verification code to gain complete access to an account, impersonating a contact, links to malicious software, phishing attempt and more. Even if you are using an official Whatsapp Messenger or mods like Yo Whatsapp, you have to keep a vigilance over it's unauthorized access.

The following are things you should do immediately, if your Whatsapp Account get hacked.

Step 1: Alert your Family and Friends that your Whatsapp Account has been hacked and they might receive objectionable text or content from the compromised account. Also, update your status on all social platforms including Instagram, Facebook and Twitter that your Whatsapp Account has been hacked.

Step 2: Remove and Delete your Whatsapp Messenger Account to stop further unratified use of it. Many of the users misunderstand uninstalling of an App same as deleting it, but that's not the case. Uninstalling of Whatsapp won't deactivate your account. You must delete your account right from the app itself or go to web support if needed. Once you deactivate your account, your message history and goggle drive backup would be erased. Moreover, you 'll be auto removed from all Whatsapp groups.

             OR

Another way to deactivate your Whatsapp Account is to send an email to "[email protected]" with the title "Lost/Stolen: Please Deactivate my Account". After Deactivation, you have 30days to recover your account.

Step 3: Make sure you check whatsapp web. Whatsapp web is the extension of the Whatsapp Messenger used to synchronize your phone with your computer. When hacked, Log on to your PC and click on the option, "Log out from all Computers".

Finally, Here is what to do to recover your Whatsapp Account. 

In order to get back your Whatsapp Account, you need to re-install Whatsapp on your device with your phone number. Immediately that is done, you will receive a Six-digit verification code that Whatsapp reads and logs you in automatically. Once you log in, the hacker will be automatically logged out of your Account. 

But if the hacker has re-activates the two steps verification after gaining access to your Whatsapp Account, you will have to wait for seven days to recover your Account. I hope this would be of help to someone.