Sin pi/4 - sin pi/5?
iamalpha:
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delete one Ans so that I could proceed
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Answered by
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sinA - sinB = 2cos (A+B/2)sin(A-B/2)
In the question
A = π/4 = 45°
& B=π/5=36
So,
Sinπ/4 - sinπ/5
=2cos(45+36/2)sin(45-36/2)
=2cos(81/2)sin(9/2)
=2×0.7604×0.0785
=0.1194
HOPE IT HELPS..... :-)
In the question
A = π/4 = 45°
& B=π/5=36
So,
Sinπ/4 - sinπ/5
=2cos(45+36/2)sin(45-36/2)
=2cos(81/2)sin(9/2)
=2×0.7604×0.0785
=0.1194
HOPE IT HELPS..... :-)
Wrong formula
this is the formula for sin(A-B)
sry....i was mistaken.....now is the answer correct @abc123456789 ????
Yeah ok
sry for the previous answer.... :-(
niw its right
Thanks alot ,,my assignment✌
:D
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