sin(A+B)-sin(A-B)
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Answer:
2 cos A sinB
Step-by-step explanation:
sin (A+B)=SINA COS B +COSA SINB
SIN (A-B)=SINA COSB -COS A SIN B
SIN (A+B)-SIN (A-B)= SINA COS B +COSA SINB-( SINA COSB -COS A SIN B)
= SINA COS B +COSA SINB -SINA COSB +COSA SINB
SINA COS B -SINA COSB will cancel
then
=COSA SINB+ COSA SINB
=2COSA SIN B
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