Question

sec^2x+8secx=0

Answer 1

you can complete the square then factor.

Answer 2

did you get pi/2 and 3pi/2 as your answers?

Answer 3

sec(sec + 8) = 0--> sec = 1/cos x = -8 --> cos x = -1/8 = -0.125
x1 = Pi - 82,82 = 97.18 deg and x2 = 97.18 + 180 = 277.18 deg

Answer 4

thank you! is it possible if you could put that in terms of pi please?

Answer 5

90 deg --> Pi/2
7.18 deg -->(Pi/2)*(7.18/90) = 7.18*Pi/180
then the 2 answer are:
x1 = Pi/2 + 7.18Pi/180 = 97.18*Pi/180
x2 = Pi + x1 = 277.18*Pi/180