Question

Math Analysis: Solve for 0 14 years ago

Answer 1

3pie/4 and 7pie/4

Answer 2

how did you get that answer?

Answer 3

try it this way...
sinx + cosx = 0
sinx = -cosx
sinx/cosx = -1
tanx = -1
now look at the unit circle (or table of trig values or calculator) that solves this last equation.

Answer 4

ty :3

Answer 5

@obada it was in radians not in pie btw =P

Answer 6

ok ., in x= 135/180 pie , x= 315/180pie

Answer 7

other method is that in the second quadrant and 4th quadrant, you have sinx and cosx in oppsite signs.
Since sinx and cosx have equal magnitudes only at pie/4
so in second quadrant x= 3pie/4 and in 4th quadrant x=7pie/4