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Math Help - Sin, cos, tan...help checking work

  1. #1
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    Sin, cos, tan...help checking work

    I have done these 6 problems, but I want to make sure that i am doing them correctly. If someone could please look it over, I would appreciate it very much..

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  2. #2
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    55. I believe is correct

    56. I believe is correct

    57. This is just 25.2
    for your theta you have used 50.194, it is better to use the true outcome = 50.19442891 (8dp) and tan of that = 1.2, x 21 = 25.2

    58. I believe is correct

    59. I believe is correct

    60. I am confused on what you are trying to show on this question, the sin, cos and tan ratios only apply to RIGHT-ANGLED triangles, I cannot see a right-angle specified. A better illustration would help thank you.


    PS Don't forget to add in (xd.p.) x = the number of decimal cases u go up to, ie. specify your range (in this case you're going up to 3d.p.)
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  3. #3
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    Thank you very much!...I have got number 60--our teacher is going over that one...thanks so much for taking the time to help!
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