6 (a) Find   sin(u/2)   if   csc(u)=15.673   and u is in Quadrant-II (assume that 0

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 70E
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6 (a) Find   sin(u/2)   if   csc(u)=15.673   and u is in Quadrant-II (assume that 0<u<2pi). sin(u/2)=?? 

 (b) Find   cos(u/2)   if   cos(u)=0.215   and u is in Quadrant-I (assume that 0<u<2pi).

**Pls help me with an accurate answer in a clear worksheet** I am so tired of getting wrong answers**Much apprecitated I am ready for thumbs up also

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