Trignometry best formulae

Trigonometry

In a right-angled triangle,

Sinθ= Opposite Side/Hypotenuse
Cosθ= Adjacent Side/Hypotenuse
Tanθ= Sinθ/Cosθ = Opposite Side/Adjacent Side
Cosecθ = 1/Sinθ= Hypotenuse/Opposite Side
Secθ = 1/Cosθ = Hypotenuse/Adjacent Side
Cotθ = 1/tanθ = Cosθ/Sinθ = Adjacent Side/Opposite Side
SinθCosecθ = CosθSecθ = TanθCotθ = 1
Sin(90-θ) = Cosθ, Cos(90-θ) = Sinθ
Sin²θ + Cos²θ = 1
Tan²θ + 1 = Sec²θ Cot²θ + 1 = Cosec²θ

Time & work,speed distance

Time, Speed & Distance

This section can help you score high, with a little practice .Very important is to solve these questions quickly as you can save time here for solving tougher questions. So learn basic formulas, few tricks & important calculation tricks to score high.

Formulas with easy tricks

Time & Work

This section , similar to the Speed & Distance, can help you score high, with a little practice .

venn diagrams set theory

Set Theory & Venn Diagrams

This is very important & interesting section. One advantageous thing is that if you are clear about venn diagrams then this can help you solving variety of questions. This section is also commonly used by companies to check your analytical ability. One can solve reasoning questions also by using venn diagram methods.

Important types of Venn diagrams

Example 1: If all the words are of different groups, then they will be shown by the diagram as given below