Asked by Carol
Could someone please show me how
1 / ( 4 tan (x/2) + 2 )
is converted to:
(- sin (x/2) /( 2 sin (x/2) + cos (x/2))
TIA
Carol
1 / ( 4 tan (x/2) + 2 )
is converted to:
(- sin (x/2) /( 2 sin (x/2) + cos (x/2))
TIA
Carol
Answers
Answered by
bobpursley
lets check it at x=0, and x=PI/2
x=0: 1/4(1+2)=1/12
(-sin45/(2sin45+cos45)=-.707/(1.414+.707) does not equal 1/12
x=0: 1/4(1+2)=1/12
(-sin45/(2sin45+cos45)=-.707/(1.414+.707) does not equal 1/12
Answered by
bobpursley
that was at x=90 deg, the identity did not hold. Now at x=0
1/4(0+2)=1/8
-0/(0+.7) does not equal 1/8
1/4(0+2)=1/8
-0/(0+.7) does not equal 1/8
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