Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
QUESTION
How do you evaluate ##tan(arccos(-3/4))## without a calculator?
##-sqrt 7/3##
Let ##a = arc cos (-3/4) in Q2##, wherein tangent is also negative.
Then, the given expression is
##tan a = sin a/cos a=-sqrt(1-(-3/4)^2)/(-3/4)=-sqrt 7/3##
