We are given with 90<x<180 degrees and asks for the value of sin(x/2), cos(x/2) and tan(x/2). We just substitute the maximum and minimum angle to the equations. sin (180/2) is equal to 1 and sin (90/2) is equal to

to 1. cos (x/2) is equal to 0≤y≤<span>

. tan (x/2) is equal to 1 to infinity. </span>
5. x <= 2
6. x > -6
7. w>1
8. m>-4
9. x <= 2 or x>= 8
10. no solution
11. n>= -1 or n <-5
12. k= 15/2 and k>= 4
The sum of the angles of a triangle is equal to 180°.
x+65+79 = 180
x = 180 - 65 - 79
x = 36°
Hello,
dom f={-2,-1,0,2}
Range={3,5,8}