根号3sin12分之派+cos12分之派的值是 多少
2个回答

B.根号2

(√3)sin(π/12) + cos(π/12)

=[cos(π/6)/sin(π/6)]sin(π/12) + cos(π/12)

=[cos(π/6)sin(π/12) + cos(π/12)sin(π/6)]/sin(π/6)

=sin(π/6+π/12)/(1/2)

=2sin(π/4)

=√2

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