Question

sin A-sinB÷cosA+cosB=?​

Answer 1

Answer: tan

Step-by-step explanation:

SinA-sinB÷cosA+cosB

SinA-sinB=2cos [(A+B)/2]sin [(A-B)/2]

cosA+cosB=2cos [(A+B)/2]cos [(A-B)/2

=2cos [(A+B )/2]sin [(A-B)/2]

______________________

2cos [(A+B)/2]cos [(A-B)/2]

=sin/cos

=tan

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