Question: Which expression is equivalent to cos(103)cos(54) - sin(103)sin(54)? Which expression is equivalent to cos(103 )cos(54*) - sin(103 )sin(54)? O sin(49') O cos(49') O sin(157) O

Which expression is equivalent to cos(103)cos(54) - sin(103)sin(54)?

Which expression is equivalent to cos(103 )cos(54*) - sin(103 )sin(54")? O sin(49') O cos(49') O sin(157") O cos(157")

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