2cos55 ° - root sign 3 times sin5 ° divided by cos5 °

2cos55 ° - root sign 3 times sin5 ° divided by cos5 °


Original formula = [2cos (60-5) - √ 3sin5)] / cos5
=[2(1/2cos5+√3/2sin5)-√3sin5]/cos5
=(cos5+√3sin5-√3sin5)/cos5
=cos5/cos5
=1