Question #0427b

1 Answer
Alan P.
Aug 4, 2015

Quadrant 4

Explanation:

Using CAST (see diagram)

#sin(theta) >= 0# in quadrants 1 and 2
#color(white)("XXXXXXXX")#...so it can't be either Q1 or Q2
and
#tan(theta) >=0# in quadrants 1 and 3
#color(white)("XXXXXXXX")#...so it can't be either Q1 or Q3

which only leaves Q4
enter image source here

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