How do i simplify this ? # (tga + tgb)/(ctga + ctgb) #

3 Answers
Apr 5, 2018

Ignore this answer. Please delete @moderators.

Explanation:

Wrong answer. Sorry.

Apr 6, 2018

Incorrect Answer

Explanation:

Also the wrong answer, please disregard and delete

Apr 6, 2018

#(tana+tanb)/(cota+cotb)=tanatanb#

Explanation:

#(tana+tanb)/(cota+cotb)#

Note that #cotx=1/tanx#, so

#=(tana+tanb)/(1/tana+1/tanb)#.

Find a common denominator for the denominator!

#=(tana+tanb)/((tana+tanb)/(tanatanb))#

Invert and multiply.

#=(tana+tanb)*((tanatanb)/(tana+tanb))#

Cancel.

#=tanatanb#