solve those questions.
solve those questions.
MOHAMMAD AFROZ , 11 Years ago
Grade 12
Trigonometry> solve those questions....
1 Answers
Sourabh Singh
Hii
For a) and f) Use Sin A + Sin B = 2 sin((A+B)/2)cos((A-B)/2)
For b) and c) Use CosA + Cos B = 2 cos((A+B)/2)cos((A-B)/2)
for d) Use Sin A - Sin B = 2sin((A-B)/2)cos((A+B)/2)
for e) Use CosA - Cos B = β 2sin((A+B)/2)sin((A-B)/2)
Thanks..
For a) and f) Use Sin A + Sin B = 2 sin((A+B)/2)cos((A-B)/2)
For b) and c) Use CosA + Cos B = 2 cos((A+B)/2)cos((A-B)/2)
for d) Use Sin A - Sin B = 2sin((A-B)/2)cos((A+B)/2)
for e) Use CosA - Cos B = β 2sin((A+B)/2)sin((A-B)/2)
Thanks..
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