trig

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Find the exact value of cot 45°, if the expression is undefined write undefined.

  • trig -

    in an isosceles right triangle the angles are 45,45,90
    if the two legs have length x, then the hypotenuse has length sqrt(x^2+x^2) = x sqrt 2
    so
    tan 45 = x/x = 1
    cot 45 = 1/tan 45 = 1/1 = 1
    sin 45 = x /xsqrt 2 = sqrt 2/2
    cos 45 =sqrt 2/2
    sec 45 = 1/cos 45 = sqrt 2
    csc 45 =1/sin 45 = sqrt 2

  • trig -

    im confused with what you did. my teacher said it was something like
    Co + 45°=1/tan45°
    =1/O/A= A/O=1/1=1

  • trig -

    yes, that is what I said. Cot 45 = 1/tan 45 = 1
    I also did the other trig functions of 45 because I am sure you will need them.

  • trig -

    find the value exact of cot 45.If the expression is underfined

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