Results 1 to 4 of 4

Math Help - Did I do this correctly?

  1. #1
    Senior Member
    Joined
    Apr 2009
    Posts
    253

    Did I do this correctly?

    Multiple choice question
    Find the measure of angle B for the triangle with the following dimensions. A = 45 , a = 60.5 , b = 90
    a. 92.82
    b. 79.39
    c. 96.32
    d. 85.33

    sin A/a = sin B/b
    sin 45/60.5= sinB/90
    90(sin 45/60.5)= sin B
    sin B= 90(sin 45/60.5)
    B= sin^{-1}(90*(sin (45)/60.5))
    I Plug into calculator and I ger domain error.
    Please Help!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    12,134
    Thanks
    1013
    Quote Originally Posted by yoman360 View Post
    Multiple choice question
    Find the measure of angle B for the triangle with the following dimensions. A = 45 , a = 60.5 , b = 90
    a. 92.82
    b. 79.39
    c. 96.32
    d. 85.33

    sin A/a = sin B/b
    sin 45/60.5= sinB/90
    90(sin 45/60.5)= sin B
    sin B= 90(sin 45/60.5)
    B= sin^{-1}(90*(sin (45)/60.5))
    I Plug into calculator and I ger domain error.
    Please Help!
    given those dimensions, no triangle is possible. the following condition must be true for the ambiguous case (SSA) to yield a triangle.

    a \ge b\sin{A}

    recheck the given values.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Apr 2009
    Posts
    253
    What should i do then put on my paper that it is undefined or something?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    12,134
    Thanks
    1013
    Quote Originally Posted by yoman360 View Post
    What should i do then put on my paper that it is undefined or something?
    no triangle solution is possible
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. did i do this correctly?
    Posted in the Calculus Forum
    Replies: 2
    Last Post: September 20th 2009, 04:17 PM
  2. did i do this correctly?
    Posted in the Calculus Forum
    Replies: 2
    Last Post: August 27th 2009, 05:26 PM
  3. Am I doing This correctly?
    Posted in the Algebra Forum
    Replies: 3
    Last Post: June 12th 2008, 08:43 PM
  4. Is this done correctly?
    Posted in the Calculus Forum
    Replies: 1
    Last Post: September 16th 2007, 04:03 PM
  5. Is this done correctly?
    Posted in the Calculus Forum
    Replies: 1
    Last Post: September 2nd 2007, 06:38 PM

Search Tags


/mathhelpforum @mathhelpforum