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標題:
concerning arithmetic means pls
發問:
22.If the arithmetic means of sin0 and tan45 is cos x,find x where 0
最佳解答:
arithmetic means of a set of real no:{a1,a2,a3,....,an}=summation(a1,a2,a3,....,an) /n So, arithmetic means of sin0 and tan45 is : (sin0+tan45)/2=1/2=cos x easy to get x=60 (special angle)
其他解答:
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