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OpenStudy (anonymous):
find the value of sin35degree sin55degree-cos35degree cos55degree.plss can u kindly show the steps
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OpenStudy (mathmate):
It should read: cos(a)cos(b)-sin(a)sin(b)=cos(a+b) although it would not make a difference in this case.
OpenStudy (callisto):
Sorry :(
OpenStudy (mathmate):
No worries! :)
OpenStudy (anonymous):
thanks
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