SOLUTION: If csc(x)=9, for 90° < x < 180°, then
sin(x/2) =
cos(x/2) =
tan(x/2) =
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Question 1127013: If csc(x)=9, for 90° < x < 180°, then
sin(x/2) =
cos(x/2) =
tan(x/2) =
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
=>
since, we have as in the second quadrant, we will have
<----- it is negative
since we are in the second quadrant as ° < < ° , and we have which changes the interval to :
°< < °
°< < ° <----- first quadrant
---> we are going to take only the positive root since the interval now in the first quadrant.
---> we are going to take only the positive root since the interval now in the first quadrant.
---> we are going to take only the positive root since the interval now in the first quadrant
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