This formula expresses the product of a sine function and a cosine function as half the sum of two sine functions, one with the difference of the angles and the other with the sum of the angles. 希望这个解答能够帮助您理解sinacosb的积化和差公式。如果您有任何疑问或需要进一步的解释,请随时告诉...
or is (SinAcosB)-(SinBcosA) the same as (SinACosA-sinBcosB) Report 12/04/16 Mark M. My error sinAcosA + sinAcosB - sinBcosA - sinBcosB sinAcosB - sinBcosA + sinAcosA - sinB cosB communite sin(A - B) + sinAcosA - sinBcosB difference formula Report 12/05/16 Still...