In this post you will fiind some important formulas which has complete relation with

Hi dears i am back again with the

**. ssc doesn't ask anything out of thease formulas. so these formulas becomes**__previous years questions__**for your**__important__**.**__preparation__Hi dears i am back again with the

**TRIGNOMETRY**. This is the chapter about we afraid in our secondary examination. It has variety of questions some could be solved in a minute or some takes much time to get solved . In order to cover this section we need to have COVERED**ALL IMPORTANT TRIGNOMETRIC EQUATION AND FORMULAS.***so to cover this section i am providing some important trignometric formulas for you. after that you would be able to do this section more effectively.***once you have revised all important trignometric formulas you are required to revise them and one should also know how to use them .**
STARTING FROM THE

__BASIC TRIGNOMETRY FORMULAS:-__**sin²**θ

**+cos²**θ

**=1 {**we can change the side of sinθ or cosθ}

**sec²**θ

**-tan²**θ

**=1 {**we can change the side of tanθ or secθ}

**cosec²-cot²=1**{ we can write this as well cosec²=cot²+1,cot²θ=cosec²θ-1, this is because of changing the side of the elements}

---------------------------------------------------------------------------------------------------------------------------

*NOW MOVING TO NEXT**FORMULAS;-*
SINθ/COSθ = TANθ {Inverse of it= COTθ

NOW INVERSE FORMULAS OR EQUATION:-

*COSEC*θ IS INVERSE OF SINθ

COTθ IS INVERSE OF TANθ

SECθ IS INVERSE OF COSθ

let me show you how they are inverse:- when cosθ is required and secθ is given we can write

__sec____θ=1/cosθ and all inverse can be written as well they are division components.__
Now come on

*trignometric value table-*trignometric value table |

*know the trick to make trignometric value table:-*

i will tell you in story mode;-

[(There were a father Sinθ who gave its sons(0°,30°,45°,60°,90°) money as 0,1,2,3,4 now the father have 4 grandsons from each sons. the property divided in the four part like (0/4,1/4,2/4,3/4,4/4) . but due to recesion there were loss so underoot the amount now , you will get the value of sin table. just REVERSE for cos, for tan we know it is the result of , division of sin and cos just divide and get the value of tan, cot is revese of tan so reverse the terms, cosec is divident of sin so divide value of sin, as well cos for sec)]

now tak about what is

**regarding**__important____previous years questions for ssc cpo,cgl.__
now come on the

**Sin graph( just for visuals):-**sine graph |

that means;

sin n(π∕2)=0 which consist of................... -3π∕2, -π∕2, +π∕2,3π∕2....................

now

sin0+sin1+sin2+sin3+.............+sin360=0

*now come on cos graph:-*cos graph |

cos(π∕2),cos(3π∕2),cos(5π∕2),cos(7π∕2)=

**0**
Cos 0, 2π,4v,6π-______________= +1

Cos π, 3π, 5v,7π_____________= -1

cos 0+ cos 1+ cos 2+ cos3+.........+cos180=

**0**
cos 1+ cos 2+cos 3+....................+ cos179 =

**0**
cos 1+ cos2+cos3+..................+cos180= -1

cos 0+cos 1+ cos 2+.....................+cos 179= +1

**Cos(180-θ)= cos(180+θ)**

example:- cos 170=cos190

**cos(90-θ) = - cos(90+θ)**

or

**cos(90-θ)+cos(90+θ)=0**

example:- cos 80+cos100=0

**--------------------------------------------------------------------------------------------**

Now come on Angle conversion:-

Sign changes with value of theta |

sinθ changes in cosθ ↑ all of these changes happen

tanθ changes in cotθ ↑ only on

secθ changes in cosecθ ↑ 90,270 degree angels

__there is trick to remember this is to ASTC__

Some more important rules are attached here by to give it a final touch.

__download all or take a screenshots of__

*ALL IMPORTANT TRIGNOMETRIC EQUATION , FORMULAS**This is first post introducing all the trignometric formulas and equations, by this one can get absolute grip over trignometry for ssc,cds and all of the compettitive exams where trignomety is a important topic.*

*YOUR FEEDBACKS ARE WELCOMED AND SUGGEST SOMETHING IF I AM LACKING IN.*

*wish you beautiful journey towards trignometry.*

*i will be posting some important trignometry questions of maths which would be beneficial for you. as*

*SSC**asks mostly 2 queestion from the topic.*

__THIS POST IS BENEFICIAL FOR IMPORTANT PREVIOUS YEARS QUESTIONS FOR SSC CPO,CGL.__

**STAY TUNED, SUBSCRIBE IF YOU WANT MY POST IN YOUR GMAIL INBOX.**

**ONCE AGAIN THANK YOU ALL**

## No comments:

## Post a Comment