if sinA+ cosA =a then find the value of sinA/cosA
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Step-by-step explanation:
sinA+ cosA =a
squaring on both the sides we get
(sinA + cosA)² = a²
sin²A + cos²A + 2. sinA. cosA = a²
1+ 2 sinA. cosA = a²
2sinA . cosA = a²-1
sinA. cosA = a²-1 / 2
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