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? asked in Science & MathematicsMathematics · 2 years ago

TRIG HELP!?

Square root3 *sin(t)=cos(t)

Not sure how to solve in 0<t<2pi

5 Answers

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  • Alan
    Lv 7
    2 years ago
    Favorite Answer

    Update : Correcgtion

    if you meant

    sqrt(3) * sin(t) = cos(t)

    divide both sides by sin(t)

    sqrt(3) = cos(t)/sin(t)

    so this is

    cot(t) = sqrt(3)

    cos( pi/6) = sqrt(3)/2

    sin(pi/6) = 1/2

    so

    cotan(pi/6) = sqrt(3)

    since cotangent has period of pi

    t = pi/6 and 7pi/6

  • ?
    Lv 7
    2 years ago

    sqrt(3) * sin(t) = cos(t)

    Divide it by 2.

    sqrt 3/2 sin t =1/2 cos t

    Now replace the values

    cos t cos 60 - sin 60 sin t=0

    cos (t+60)=0=cos 90

    This gives t+60=90, t=30 degrees.

  • ?
    Lv 6
    2 years ago

    sint = cost

    sint = sin (90° - t)

    t = 90° - t

    t + t = 90°

    2t = 90°

    t = 45°.

  • 2 years ago

    √3.sin(t) = cos(t)

    sin(t)/cos(t) = 1/√3

    tan(t) = 1/√3

    t = (π/6) + kπ ← where k is an integer

    First case: k = 0 → t = π/6

    Second case: k = 1 → t = (π/6) + π = 7π/6

    Third case: k = 2 → t = (π/6) + 2π = 13π/6 → over 2π

    → Solution = { π/6 ; 7π/6 }

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  • 2 years ago

    Ans. sqr(3)sin(t)=cos(t)=>sin(t)/cos(t)=1/sqr(3)

    =>tan(t)=1/sqr(3)=>t=pi/3, pi+pi/3=4pi/3.

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