Find the limit of tan 6t divided by sin 2t as t approaches zero

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At 2:35 why didn't you change the 1 on the 1/cos(6t) to a 't' instead? Why choose the 1 on 1/sin(2t) to change it to a 't'?

gtsang
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Hello ms. May I ask, Why is it that 1/cos6t is equal to 1?

rodylenealbios
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is the reciprocal of the formula is the same? sint/t=1 == t/sint=1 ???

adiletzholdoshov