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Math Help - sides of triangle

  1. #1
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    sides of triangle

    hello can you tell me if I have done this question correctly
    I split the triangle in 2 to get a right angled triangle
    (so lenght of adjacent split in two+1.15)
    so then I got sin 34(degrees) x 1.15 = 0.776

    so 1.15^2 + 0.776^2= hypothenuse^2
    so a (or b as both sides of triangle are the same) = 1.4
    a=1.4
    b=1.4

    Drawing attached
    could you tell me where I am wrong if I am
    Attached Files Attached Files
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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by wolfhound View Post
    hello can you tell me if I have done this question correctly
    I split the triangle in 2 to get a right angled triangle
    (so lenght of adjacent split in two+1.15)
    so then I got sin 34(degrees) x 1.15 = 0.776

    so 1.15^2 + 0.776^2= hypothenuse^2
    so a (or b as both sides of triangle are the same) = 1.4
    a=1.4
    b=1.4

    Drawing attached
    could you tell me where I am wrong if I am
    Hi wolfhound,

    I'm confused about your drawing. In the drawing you said you already had a right triangle. Which angle is the right angle? Is 2.3 the hypotenuse? You never said anything about it being isosceles. Is it?

    Try using microsoft paint to make your drawing.

    Start - Program - Accessories - Paint

    Label your triangle A, B, C. Name the sides you know and the angle you know. Then it'll be easy.
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  3. #3
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    Quote Originally Posted by masters View Post
    Hi wolfhound,

    I'm confused about your drawing. In the drawing you said you already had a right triangle. Which angle is the right angle? Is 2.3 the hypotenuse? You never said anything about it being isosceles. Is it?

    Try using microsoft paint to make your drawing.

    Start - Program - Accessories - Paint

    Label your triangle A, B, C. Name the sides you know and the angle you know. Then it'll be easy.
    Hello ,That is the way its on my question sheet the question says
    A right angled triangle has sides of lenght 2.3 metres,a meters and b meters
    it doesnt say actually what type of triangle it is
    It doesnt look like a right angle triangle unless I split it down the centre
    so the angle shown in bottom left is 34 the top corner 56 and bottom centre 90

    it doesnt give anymore info
    do you think I am doing it the correct way by splitting it?
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  4. #4
    A riddle wrapped in an enigma
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    Quote Originally Posted by wolfhound View Post
    Hello ,That is the way its on my question sheet the question says
    A right angled triangle has sides of lenght 2.3 metres,a meters and b meters
    it doesnt say actually what type of triangle it is. Yes, it does.
    It doesnt look like a right angle triangle unless I split it down the centre
    so the angle shown in bottom left is 34 the top corner 56 and bottom centre 90

    it doesnt give anymore info
    do you think I am doing it the correct way by splitting it?
    I'm just going by what you have written here. Look at what I've highlighted in red.

    It doesn't say anything about the triangle being isosceles, so why do you think a perpendicular would bisect any base?

    You need to check with the one who came up with this vague question and create a drawing like I suggested that will reflect exactly what's given and what you're supposed to find.

    I'd have to assume the right angle is between sides a and b, and that 2.3 is the hypotenuse. But, that's only an assumption. It's easy from here if that's the case, but who knows??
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  5. #5
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    Its a past exam paper!
    Yes I must equire about it
    I couldnt understand how it could be a 90 triangle and look like that
    Must be a trick
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