Question #ebf32

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Answer 1 · 2018-02-03T23:08:56

$(1+cos240)/(1+cos240)=1$

Substitute $u=1+cos240$

$u/u$ , Since any number Divided by Itself is $1$

The awnser Is $1$ so,

$(1+cos240)/(1+cos240)=1$

Answer 2 · 2018-02-04T01:08:31

$1$

$(1+cos240)/(1+cos240)$

If the top and bottom numbers of the fraction are equal, then the fraction is equal to $1$ .

$:.=1$