Find sin x/2, cos x/2, and tan x/2
from the given information.
cos x=− 4/5, 180° < x < 270°
sin(x/2=
cos(x/2)=
tan(x/2)=
from the given information.
cos x=− 4/5, 180° < x < 270°
sin(x/2=
cos(x/2)=
tan(x/2)=
1 answer
1 answer
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1 answer