what is sin(A+B)× sin(A - B) value
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sin(A+B) x sin(A-B)
(sinA.cosB + sinB. cosA)(sinA.cosB - sinB.cosA)
sin²Acos²B - sinAsinBcosAcosB + sinAsinBcosAcosB - sin²Bcos²A
sin²Acos²B - sin²Bcos²A
(sinA.cosB + sinB. cosA)(sinA.cosB - sinB.cosA)
sin²Acos²B - sinAsinBcosAcosB + sinAsinBcosAcosB - sin²Bcos²A
sin²Acos²B - sin²Bcos²A
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Solution is enclosed.
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