exam Maths Puzzle Numerical Ability

Please help with this problem, simplify: (3x^3y^-4)^3

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exam Other Question

classify the angle 101degree as acute, right, obtuse, or straight.. Can someone please help me with these ????
Find theta for 0 degrees < or = to theta < 360 degrees.

a)tan theta= 0.932,sin theta < 0
b)sin theta= -0.192,tan theta < 0
c)sec