Question #ebf32

2 Answers
landon3
Feb 3, 2018

#(1+cos240)/(1+cos240)=1#

Explanation:

Substitute #u=1+cos240#

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

The awnser Is #1# so,

#(1+cos240)/(1+cos240)=1#

Nam D.
Feb 4, 2018

#1#

Explanation:

#(1+cos240)/(1+cos240)#

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

#:.=1#

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