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anonymous

  • one year ago

Which statement is true? A)In any right triangle, the sine of one acute angle is equal to the cosine of the other acute angle B)In any right triangle, the sine of one acute angle is equal to the sine of its complementary angle. C)In any right triangle, the cosine of one acute angle is equal to the cosine of its complementary angle D)In any right triangle, the sum of the sine of one acute angle and the cosine of the other acute angle is 1 @chrisdbest

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  1. chrisdbest
    • one year ago
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    That looks like B

  2. anonymous
    • one year ago
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    are you sure

  3. chrisdbest
    • one year ago
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    yes

  4. anonymous
    • one year ago
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    thanks

  5. chrisdbest
    • one year ago
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    medal please?

  6. anonymous
    • one year ago
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    it was wrong

  7. DanJS
    • one year ago
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    Think about the values for X and Y in the unit circle, where (x,y) = (cos(theta), sin(theta))

  8. DanJS
    • one year ago
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    For B as suggested, Test and see if \[\sin(\theta) = \sin(90- \theta)\]? are those two Y values the same if you use an angle less than 90 for theta...

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