a) sin(A+C/2) = cos (B/2)
b) sin (A+B/2) = cos (C/2)
c) cos(A+B/2) = cos (C/2)
d) cos(A-B/2)= cos (C/2)
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Answered by
0
Answer:
what is this bro please write your problem
Answered by
1
Answer:
sinA-sinc=o
2sin(c-d/2).cos(c+d/2)=0
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