If sinx1+sinx2+sinx3+sinx4=4,then
Cosx1+cosx2+cosx3+cosx4=?
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Answer:
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Step-by-step explanation:
The max value of Sinx = 1 when x = 90°
Sin90 + SIn90+Sin90+Sin90 = 4
=> x1 = x2 = x3 = x4 = 90°
Now the value of Cosx1 + Cosx2 + Cosx3 + Cosx4 =
Cos90° + Cos90° + Cos90° + Cos90° = 0.
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