Mar 5, 2015 · Free Online Scientific Notation Calculator. Solve advanced problems in Physics, Mathematics and Engineering. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, Calculation Histo

Dec 8, 2016 · Here's another way of solving this problem. We know that #tantheta = sintheta/costheta# and #sectheta = 1/costheta#.

Oct 13, 2016 · Let us start from right hand side. #(secx+tanx)^2# = #(1/cosx+sinx/cosx)^2# = #((1+sinx)/cosx)^2# = #(1+sinx)^2/cos^2x#

Jul 24, 2015 · Using the relationship between tan/cot and sin-cos, plus the double angle formulae for sin and cos. (as requested)

Mar 19, 2018 · #int (secx)^2/(secx+tanx)^(9/2)*dx# = #1/2int (2(secx)^2)/(secx+tanx)^(9/2)*dx# = #1/2int secx*(secx+tanx)/(secx+tanx)^(9/2)dx# + #1/2int secx*(secx-tanx)/(secx+tanx ...

Apr 2, 2018 · You can use a substitution, then solve the problem like a regular polynomial. #tan^2x-tanx=0# #(tanx)^2-tanx=0# ...

May 19, 2018 · color(crimson)(-1/ cos^2x 2tan x - (1+tan x)^2 => 2 tan x - 1 - 2tan x - tan^2x => - (1 + tan^2 x) => - sec^2 x = -1/cos^2x

Apr 26, 2015 · First find cos x by using trig identity: #cos^2 x + sin^2 x = 1.# #cos^2 x = 1 - 25/169 = (169 - 25)/169 = 144/169 #

Oct 11, 2017 · 6(tanx)^2-4(sinx)^2=1 =>6(tan^2x)xxcos^2x-4sin^2x xxcos^2x=cos^2x =>6sin^2x-4sin^2x xxcos^2x=cos^2x =>6(1-cos^2x)-4(1-cos^2x) cos^2x=cos^2x =>6-6cos^2x-4cos^2x+4cos^4x=cos^2x =>4cos^4x-11cos^2x+6=0 =>4cos^4x-8cos^2x-3cos^2x+6=0 =>4cos^2x(cos^2x-2)-3(cos^2x-2)=0 =(cos^2x-2)(4cos^2x-3)=0 when cos^2x-2=0=>cosxpmsqrt2 but -1<=cosx <=+1 so this solution is not acceptable. when (4cos^2x-3)=0 cosx ...

Jan 26, 2017 · see below (1+tan x)^2 = (1+tanx)(1+tanx)---> FOIL =1+tanx + tanx + tan^2 x =1+2tanx+tan^2 x