Inverse trigonometric function || prove xy + yz + xz = 1 if || ctevt || neb prove that : xy + yz + zx =1 if tan inverse x + tan inverse y + tan inverse z = 90° .......................................................................................... नमस्कार म भिमराज सापकोटा स्वागत गर्दछु YouTube Channel BHIM RAJ SAPKOTA (Quality Education For All) मा यस Channel मा school level का Science, Comp. Mathematics र Opt. Mathematics र +2 Level साथै CTEVT को Diploma level का Physics, Chemistry र Mathematics विषयका Important Videos हरू पाउन सक्नुहुनेछ Hi Iam Bhim Raj Sapkota Welcome to my YouTube Channel BHIM RAJ SAPKOTA ( Quality Education For All). In my channel most of the videos are Education based videos of science and mathematics of school level, intermediate level (+2 level of NEB) and Diploma level of CTEVT ....................................................................................................... About this video In this video I described about what is inverse trignimetric function or equation inverse trignometric function class 12 inverse trigonometric function class 11 in trigonometric function formula ....................................................................................................... Some other videos 1) Einstein photoelectric effect • Einstein photoelectric effect || Einstein ... 2) Radioactive desintegration • Radioactive desintegration|| Decay law || ... 3) Probability of binomial distribution part 1 • Binomial probability || Two items selected... 4) Probability of binomial distribution part 2 • Probability of binomial distribution || in... 5) Introduction of vector • Chapter: Vector || Introduction Of Vector ... 6) Triangle law of vector addiction • Chapter:Vector || Triangle Law Of Vector A... 7) Parallelogram law of vector addiction • Chapter: Vector || Resolution of vector ||... 8) Geographical information systems • Chapter: Geographical information system (... 9) Kinematic (projectile Motion) • Chapter:Kinematic | Projectile Motion | Fi... 10) Binomial Expansion • Chapter: Binomial Expansion || General Ter... • Chapter: Binomial Expansion part 2 || Gene... • Binomial Expansion part 3 || All Revision... 11) Doppler effect • Doppler Effect || NEB || Numerical and For... • Doppler Effect || Frequency of echo || Num... 12) Derivative of trigonometric functions • find the derivative of sinx from first pri... • Derivative of trigonometric and Exponentia... ....................................................................................................... Links Facebook: / bhimraj.sapkota Instagram: / bhim_skt WhatsApp No.: 009779848123909 ....................................................................................................... Gmail [email protected] ....................................................................................................... Contacts 009779848123909 009779848100111 009779866219788 009779822520507