plz say derivation of diz
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Hi !
from RHS
=> 1/2 [sin(A + B) + sin ( A - B) ]
Using formula ,
sinC + sinD = 2sin(C + D)/2 * cos ( C - D)/2
since,
=> 1/2 [ 2sin ( A+ B +A - B)/2 * cos( A + B - A + B)/2
=> 1/2 [ 2sin2A/2 *cos2B/2]
=> 1/2 [ 2sinA * cosB]
=≥ sinA * cosB
LHS = RHS prooved ♻
____________________________
Hope it helps you !!
@Rajukumar111
from RHS
=> 1/2 [sin(A + B) + sin ( A - B) ]
Using formula ,
sinC + sinD = 2sin(C + D)/2 * cos ( C - D)/2
since,
=> 1/2 [ 2sin ( A+ B +A - B)/2 * cos( A + B - A + B)/2
=> 1/2 [ 2sin2A/2 *cos2B/2]
=> 1/2 [ 2sinA * cosB]
=≥ sinA * cosB
LHS = RHS prooved ♻
____________________________
Hope it helps you !!
@Rajukumar111
ajai57:
tys
brw at 3 rd step ur wrote as cos A/2 plz edit tht
itz ok broe
and following also
u don't change there
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