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AshhSmith

  • 3 years ago

Can somebody please help with the steps to doing this ?? Part 1: Make up an angle measure for angle C and a length for one of the sides (AB, BC, or CA). Part 2: Use a trigonometric ratio (sine, cosine, or tangent) to solve for one of the other side lengths.

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  1. AshhSmith
    • 3 years ago
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  2. AshhSmith
    • 3 years ago
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    Part 1: c = 45 and length for CA is 5??

  3. mathstudent55
    • 3 years ago
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    If m<C = 45, then m<A = 45, and m<B = 90. You have a 45-45-90 triangle. In a 45-45-90 traingle, the two legs are congruent (they have the same length). The hypotenuse is sqrt(2) times longer than the 2 legs.

  4. tcarroll010
    • 3 years ago
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    Since C is 45, then so is A. So, this will be an isosceles triangle and the measure of AB will equal the measure of BC. The sine of C = AB/AC. sine 45 = AB/AC (AC) sine 45 = AB = BC

  5. tcarroll010
    • 3 years ago
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    btw the sine 45 = [sqrt(2)] / 2

  6. AshhSmith
    • 3 years ago
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    Its supposed to be a right triangle.. i just added the angle measures on my own

  7. tcarroll010
    • 3 years ago
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    Yes. All the above that I wrote bore that in mind.

  8. tcarroll010
    • 3 years ago
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    So, AB = (5)(sqrt 2) / 2

  9. AshhSmith
    • 3 years ago
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    thats the answer?

  10. tcarroll010
    • 3 years ago
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    For the length of AB, that's the answer. If you multiplied it out, you would get AB = 3.53553 etc.

  11. tcarroll010
    • 3 years ago
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    Is this making sense to you now?

  12. AshhSmith
    • 3 years ago
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    yes alot more than before !

  13. tcarroll010
    • 3 years ago
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    It's good that this is going well for you. Remember, sine = opposite over hypotenuse.

  14. tcarroll010
    • 3 years ago
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    Good luck to you in all of your studies and thx for the recognition! @AshhSmith

  15. AshhSmith
    • 3 years ago
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    ty !

  16. tcarroll010
    • 3 years ago
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    uw!

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