please answer in detail 4/11/2014 | Chris from Houston, TX | 1 Answer | 0 Votes Mark favorite Subscribe Comment Comments thanks im finally getting it 4/11/2014 | Chris from Houston, TX Comment
9 /(tanX^2 +1 ) = 9/ ( Sin^2 X / Cos^2 X +1 ) = 9 / ( Sin^2 X + Cos^2X / COS^2 X ) = = 9 / ( 1 / Cos^2 X ) = 9 Cos^2 X 4/11/2014 | Parviz F. Comment
Comments