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anonymous

  • 5 years ago

which expression is equivalent to sin(42degrees)cos(48degrees)+cos(42degrees)sin (48degrees)?

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  1. Owlfred
    • 5 years ago
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    Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

  2. anonymous
    • 5 years ago
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    everyone doing these same questions tonight? must be an epidemic this is the "addition angle" formula for sine \[sin(a+b)=sin(a)cos(b)+cos(a)sin(b)\] here \[a=42,b=48,a+b=90\] \[sin(90)=1\]

  3. anonymous
    • 5 years ago
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    i dont remeber this there from like my freshman year.

  4. anonymous
    • 5 years ago
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    thank you though : )

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