Given: cos a =-24/25 , sin B =3/5 , a and B are second-quadrant angles; find cos(a -B )
multip...
Mathematics, 07.04.2020 03:19 thesarav
Given: cos a =-24/25 , sin B =3/5 , a and B are second-quadrant angles; find cos(a -B )
multiple choice:
3/5
4/5
117/125
Answers: 2
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