Find the value of cos 55° + cos 125° + cos 300°.
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Cos 55 + Cos 125 + Cos 300
Cos (90 - 35) + Cos (90 + 35) + Cos (270 + 30)
Sin 35 - Sin 35 + Sin 30
Sin 30 = 1/2
#BeBrainly
Cos (90 - 35) + Cos (90 + 35) + Cos (270 + 30)
Sin 35 - Sin 35 + Sin 30
Sin 30 = 1/2
#BeBrainly
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