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Mathematics

9th

grade

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Тригонометрия

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Негізгі тригонометриялық тепе - теңдікті көрсетіңдер:

    sinx+cosx=1\sin x+\cos x=1

    sin2x+cos2x=1\sin^2x+\cos^2x=1

    sin2x+cos2y=1\sin^2x+\cos^2y=1

    sin2xcos2x=1\sin^2x-\cos^2x=1

  • 2. Multiple Choice
    30 seconds
    1 pt

    tgx=?

    cosxsinx\frac{\cos x}{\sin x}

    1+1cos2x1+\frac{1}{\cos^2x}

    sinxcosx\frac{\sin x}{\cos x}

    1+cosx1+\cos x

  • 3. Multiple Choice
    30 seconds
    1 pt

    Қосындының косинусын көрсет:

     cos(a+b)\cos\left(a+b\right)  

    cosacosb+sinasinb

    cosasinb-cosbsina

    cosasina+cosbsinb

    cosacosb-sinasinb

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