If A+B+C=180 degree, show that sin^2A+sin^2B+sin^2C=2+2cosA.cosB.cosC

This video is basically prepared for SEE students for the subject optional maths. The video may have some weakness. I would be very grateful to any suggestions and recommendations from the viewers. Also this might not be suitable for those students who do not have idea of basic arithmetic and algebraic calculations.
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Thank You

Пікірлер: 13

  • @jaayukamunasinghe8313
    @jaayukamunasinghe83133 жыл бұрын

    Good work, really helped me out. Thanks and wishing you best of luck!!

  • @sanjaymahaseth3764

    @sanjaymahaseth3764

    2 жыл бұрын

    Kindly please exaplain how 1/2[-1-4cosAcosBcosC]+3/2=1-2cosAcosBCosC.please exaplain

  • @AdarshTiwari-qs7de
    @AdarshTiwari-qs7de3 жыл бұрын

    Nice sir

  • @user-ix7ch5ef8y
    @user-ix7ch5ef8y2 жыл бұрын

    Thank you so much 😊

  • @dilashatiwari166
    @dilashatiwari1662 жыл бұрын

    Thankyou 🦋❤️

  • @shanoomass1634
    @shanoomass16343 жыл бұрын

    Thanks sir

  • @user-or3px1vz6r
    @user-or3px1vz6r11 ай бұрын

    Thankyou sir

  • @Sumixgaming69
    @Sumixgaming692 жыл бұрын

    Thank you sir for your help

  • @sanjaymahaseth3764

    @sanjaymahaseth3764

    2 жыл бұрын

    Kindly please exaplain how 1/2[-1-4cosAcosBcosC]+3/2=1-2cosAcosBCosC.please exaplain

  • @shiakmastan6899
    @shiakmastan6899 Жыл бұрын

    To so much sir

  • @ritapanta9121
    @ritapanta91212 жыл бұрын

    T q sir

  • @sanjaymahaseth3764
    @sanjaymahaseth37642 жыл бұрын

    Kindly please exaplain how 1/2[-1-4cosAcosBcosC]+3/2=1-2cosAcosBCosC.please exaplain

  • @xlegendprox5785
    @xlegendprox5785 Жыл бұрын

    Nepali ma vannu na