√100以上 tan^2x = sec^2x-1 490575-5.25064634
Get stepbystep solutions from expert tutors as fast as 1530 minutes Your first 5 questions are on us!A follow up proof to accompany sin^2 cos^2 =1 Another identity that is used quite a bit, especially in calculus involving trigonometric functions #LHS=(tan^2x)/(secx1)1# #=(sec^2x1)/(secx1)1# #=((secx1)(secx1))/(secx1)1# *You can now get rid of (secx1) at the top and bottom of the fraction When the numerator and denominator of a fraction are both the same, providing they aren't both zeros, what you get is 1 #=secx11# #=secx# #=RHS# And here is your proof Trigonometry Identity Tan 2 X 1 Sec 2 X Youtube 5.25064634
