SOLUTION: cot^2y(sec^2y-1)=1
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Question 416006
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cot^2y(sec^2y-1)=1
Answer by
MathLover1(20850)
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cot^2y(sec^2y-1)=1
.use identites cot^2y = 1/tan^2y and sec^2y-1 = tan^2y
cot^2y(sec^2y-1) = (1/tan^2y)(tan^2y) <--The tan^2y cancels out
cot^2y(sec^2y-1)= 1
