Which expression is equivalent to cos(40°)cos(10°) + sin(40°)sin(10°)?
sin(40° – 10°)
cos(40°...
Mathematics, 20.10.2020 03:01 cs101200
Which expression is equivalent to cos(40°)cos(10°) + sin(40°)sin(10°)?
sin(40° – 10°)
cos(40° + 10°)
sin(40° + 10°)
cos(40° – 10°)
Answers: 2
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