Question: If sin(A)=4/5 where A is in the 2nd Quadrant, and sin(B) = 7/25 where B is in the 1st Quadrant, determine cos(A-B).

If sin(A)=4/5 where A is in the 2nd Quadrant, and sin(B) = 7/25 where B is in the 1st Quadrant, determine cos(A-B).



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