Question

If tan a
...20/21
then show
that :
CosO-SinO+1/CosO+SinO+1=3/7​

Answer 1

Step-by-step explanation:

tana=20/21

cosO-sinO+1/cos0+sinO+1=3/7

2(cisO-sinO)=-4/7

cosI-sinO=-2/7

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