<PRE><B>Question 1064670</B>
tan(A+B) = (tan(A) + tan(B)) / (1 - tan(A)tan(B))
:
sin^-1 (3/5) = 36.8699
:
cos^-1 (8/17) = 61.9275
:
tan(A) = tan(36.8699) = 0.75
:
tan(B) = tan(61.9275) = 1.875
:
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tan(A+B) = (0.75 + 1.875) / (1-(0.75 * 1.875)) = -6.4615
:
Answer is D.)
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:
Note we could have calculated tan(36.8699 + 61.9275) which is
equal to our calculation above
:

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