If Tana+Tanb+Tanc=Tanatanbtanc Then

     

NTSE exam 2021 stage-II postponed due to COVID, which was scheduled khổng lồ be held on 13th June 2021. Council will soon release revised examination dates on its official website.

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For all values of A và B `tan(A+B)=(tanA+tanB)/(1-tanAtanB)` & `tan(A-B)=(tanA-tanB)/(1+tanAtanB)`

Prove that `sin(A+B+C)=sinAcosBcosC+cosAsinBcosC+cosAcosBsinC-sinAsinBsinC` `cos(A+B+C)=cosAcosBcosC-cosAsinBsinC-sinAcosBsinC-sinAsinBcosC`

Jee 2021 | Division and Distributions-Iii | Examples | Important Results Of Straight Lines | Allied Angles | Examples | Learn Different Forms of Equations of Circles in One Class | Introduction khổng lồ Cartesian Coordinate Geometry | Introduction | Imaginary Number | Powers Of Iota | Complex Numbers | Examples | Jee | Permutation and Combinations | L1 | Factorial Notation | Examples | Definition and Different Forms Of Straight Line | Introduction | Inequalities | Algebraic Solution and Graphical Representation of Linear Inequalities in one Variable | Examples