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sin2A−sin2BsinAcosA−sinBcosB = a when A = 20∘ and B = 25∘.Find the value of 1a2. __ |
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Answer» sin2A−sin2BsinAcosA−sinBcosB = a when A = 20∘ and B = 25∘.Find the value of 1a2. |
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