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wen_21
 3 years ago
find all values of x in the interval [0,2pi] that satisfy the equation 7sin(2X)=7cos(x)
wen_21
 3 years ago
find all values of x in the interval [0,2pi] that satisfy the equation 7sin(2X)=7cos(x)

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cwrw238
 3 years ago
Best ResponseYou've already chosen the best response.0use the identity sin(2x) = 2 sin(x)cos(x): so 7*2sin(x)cos)x  7cos(x) = 0 now factior the LHS as the next step to solving

cwrw238
 3 years ago
Best ResponseYou've already chosen the best response.0hint: divide through by 7 as well
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