Simplify the expression to a single term:
Cos X - Cos (X + 90) for (0 < X < 90)
#SAT $PSAT #ACT
Practice Problems
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SAT, ACT, New SAT, PSAT and SAT Subject Test Practice Problems are provided for students of OptimalSATPrep.com and others.
Simplify the expression to a single term:
Cos X - Cos (X + 90) for (0 < X < 90)
#SAT $PSAT #ACT