SOLUTION: Determine the value of sin2x if secx=a/b , where tanx<0 and secx>0 I know that sin2x= 2sincos

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Question 950607: Determine the value of sin2x if secx=a/b , where tanx<0 and secx>0
I know that sin2x= 2sincos
Answer by lwsshak3(11628) About Me  (Show Source):
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Determine the value of sin2x if secx=a/b , where tanx<0 and secx>0
I know that sin2x= 2sincos
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reference angle x is in quadrant IV where cos>0, sin<0,tan<0
secx=a/b
cosx=b/a