Unit circles. Draw a unit circle and see where all those cosecants might lie.
BTW, there's no way that a cosecant can equal 0.230. Think about why. (Hint: you made a mistake somewhere.)
Solve 3cot^2x+8cosec^2x+1=0, giving all the values in degrees the range 0<x<360
Ok, so I have replaced 3cot^2x with 3cosec^2x-3, to give 3cosec^2x+8cosec^2x-2=0
From here, I have used the quadratic formula giving me cosecx = 0.230.. and cosecx= -2.896...
and then I don't know how to proceed
Please help me to solve this
Unit circles. Draw a unit circle and see where all those cosecants might lie.
BTW, there's no way that a cosecant can equal 0.230. Think about why. (Hint: you made a mistake somewhere.)
Do you really accept sinx = 4.345? This solution is to be rejected. Why?
using your calculator and to obtain arcsin(-0.345). the calculator is not going to give you exactly 200 unless your calculator does better job than mine, it is going to be 200.19. The 200 and 300 are rounded numbers.