5. What exactly will each of the following expressions produce?
a. sin42°cos17° - cos42°sin17°
b. cos94°cos18° + sin94°sin18°
c. sin coste – sintos
3
tan19°+ tan 47°
d.
1-tan 19° tan 47°

Answer :

theses are very tricky letters with words and i see them on calculators all the time

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