Proving Identities Trigonometry Trigonometric Identities and Equations Proving Identities Add yours Verifying/Proving Trig Identities (Part 1) by turksvids Thank 1 Flag lesson Tip: This isn't the place to ask a question because the teacher can't reply. Post 1 of 7 videos by turksvids Next Key Questions What are the different techniques in proving identities? This key question hasn't been answered yet. Answer question How do you use trigonometric identities to prove statements? This key question hasn't been answered yet. Answer question What does it mean to prove a trigonometric identity? This key question hasn't been answered yet. Answer question Questions How do you verify the identity #cot(0-(pi/2)) = -tan 0#? VinÃcius Ferraz answered · 3 hours ago 1 Answer How do you verify #sin^2xsec^2x+sin^2xcsc^2x=sec^2x#? Alan P. answered · Yesterday 1 Answer How do you prove #10sin(x)cos(x)=6cos(x)#? bartholomew answered · 2 days ago 1 Answer Please simplify #arctan(x+2)-arctanx# ? Thanks Ratnaker Mehta answered · 3 days ago 1 Answer How do you prove # sec^2x-tan^2x =cos^2x+sin^2x #? 3 days ago 1 Answer How do you simplify #cosx/(1+sinx) + (1+sinx)/cosx#? 4 days ago 0 Answers How do you verify the identity: #sinx-sinxcos^2x=sin^3x#? Nimo N. answered · 1 week ago 1 Answer How do you prove that #sec xcot x = csc x#? Monzur R. answered · 1 week ago 1 Answer Prove that #(1+cosx)/sinx=sinx/(1-cosx)#? James answered · 1 week ago 1 Answer How do you verify #sinx/(1-cosx) - (sinxcosx)/(1+cosx)=cscx(1+cos^2x)#? Noah G answered · 1 week ago 1 Answer How do you verify #(Cos2x)/(1-sin2x)=(1+tanx)/(1-tanx)#? dk_ch answered · 1 week ago 1 Answer How do you use trigonometric identities to prove statements? 1 week ago 0 Answers Prove that ??#(Sinx+Sin2x+Sin3x)/(cosx+cos2x+cos3x) = tan2x# Abhishek K. answered · 1 week ago 1 Answer How do you solve: #sin2x - sinx = 0#? 1 week ago 0 Answers How do you prove that #sqrt(3)cos(x+pi/6) - cos(x+pi/3) = cos(x)-sqrt3sinx# ? Abhishek K. answered · 1 week ago 1 Answer Prove the identity # sin theta/ (1-cos theta) - 1/sin theta -= 1/tan theta #? Steve M answered · 2 weeks ago 1 Answer How do you prove #(tanx+sinx)/(2tanx)=cos^2(x/2)#? Abhishek K. answered · 2 weeks ago 3 Answers How do you prove #(sinx - cosx)^2 +(sin x + cosx)^2 = 2#? Jim G. answered · 2 weeks ago 2 Answers What are the different techniques in proving identities? 2 weeks ago 0 Answers How do you prove #(secx)/(sinx)-(sinx)/(cosx)=cotx#? Shantelle answered · 2 weeks ago 2 Answers How do you use trig identities to show that this is true? #tan^3x/(1+tan^2x)+cot^3x/(1+cot^2x)=(1-2cos^2x sin^2x)/(sinxcosx)# Steve M answered · 2 weeks ago 2 Answers How do you prove #(1+tan^2x)/(1-tan^2x)=1+tan2x.tanx# ? Steve M answered · 2 weeks ago 2 Answers How do you verify #(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x#? Jim G. answered · 2 weeks ago 2 Answers How do you verify the identity #(tanx - secx + 1)/(tanx + secx - 1) = cosx/(1 + sinx)#? dk_ch answered · 2 weeks ago 1 Answer How do you prove #Sin(x/3)cos(x/3) = (1/2)sin(2x/3)#? Dean R. answered · 3 weeks ago 1 Answer How do you prove #(sinx+cosx)/sinx - (cosx-sinx)/cosx = sec x csc x#? maganbhai P. answered · 3 weeks ago 1 Answer How do you verify # (1-sinx)/(1+sinx)=sec^2x-2secxtanx+tan^2x#? Narad T. answered · 3 weeks ago 1 Answer How do you prove # cos^4(x) - sin^4(x) = cos(2x)#? 4 weeks ago 2 Answers How do you prove # sec^2xcscx =sec^2x+csc^2x #? maganbhai P. answered · 4 weeks ago 2 Answers How do you verify #(tanx/(1+cosx)) + (sinx/(1-cosx))=cotx + secxcscx#? dk_ch answered · 4 weeks ago 1 Answer Prove that: cos pi/12-sin pi/12=1/root 2.What should be the answer for this question? Zsigmond S. answered · 1 month ago 2 Answers How do you verify #(1 - cos x) / (1 + cos x) = (csc x - cot x)^2#? Nghi N. answered · 1 month ago 1 Answer How do you prove that: #(sin^2 x+ cos^2 x + cot^2 x) / (1+tan^2 x) = cot^2 x# ? Steve M answered · 1 month ago 1 Answer How do you prove #1+(CosÎ¸ + SinÎ¸)(CosÎ¸-SinÎ¸)= 2/sec^2 Î¸#? Lucy answered · 1 month ago 1 Answer How do you verify #(sin^2x - cos^2x)/(sinx + cosx)=sinx-cosx#? Jim G. answered · 1 month ago 1 Answer How do you prove #sin^2x/ (cos^2 +3cosx+2) = (1-cosx)/ (2+cosx)#? maganbhai P. answered · 1 month ago 4 Answers How do you verify the identity: #1 - cos 2x = tan x sin 2x#? Shantelle answered · 1 month ago 1 Answer How do I prove this? cot(x)(1-cos(2x))=sin(2x) Jim G. answered · 1 month ago 4 Answers How do you prove #cos4x=1-2sin^2(2x)#? Narad T. answered · 1 month ago 1 Answer How do you prove #(cosx-1)(tanx-1)=0#? maganbhai P. answered · 1 month ago 1 Answer How do you prove #(secx+tanx)(1-sinx/cosx)=1#? 1 month ago 0 Answers How do you prove # secx(csc^2x)-csc^2x = secx / (1 + cosx)#? Noah G answered · 1 month ago 1 Answer How do you prove #( tan A + tan B) / (1-tan A tan B) = (cot A + cot B ) / ( cot A cot B - 1)#? Noah G answered · 1 month ago 1 Answer How do you verify #sin(x + pi/6) - cos(x + pi/3) = sqrt3 sin x#? Somebody N. answered · 1 month ago 2 Answers How do you verify #tan^2x-tan^2x*sin^2x=sin^2x#? Jim G. answered · 1 month ago 2 Answers How do you prove the identity #secx=cosx+(tanx)(sinx)#? 1 month ago 0 Answers How do you show the #secx + 1 + (1 - tan^2x)/(secx -1) = cosx/(1 - cosx)#? Aviv S. answered · 1 month ago 2 Answers How do you prove: #(4sin^2x)/(2sinx+1)=2sinx-1#? Alan P. answered · 1 month ago 1 Answer How do you prove #(cotA-1)/(cotA+1) = (cosA-sinA)/(cosA+sinA)#? Jade answered · 1 month ago 3 Answers How do you verify the identity: #cosx cscx/cot^2x=Tanx#? Jim G. answered · 1 month ago 2 Answers more Ask a question Answer questions Videos on topic View all (11) Verifying/Proving Trig Identities (Part 2) by turksvids Verifying/Proving Trig Identities (Part 3) by turksvids Verifying/Proving Trig Identities (Part 4) by turksvids Verifying Some Harder Trig Identities by turksvids Yet Another Hard Trig Identity (3 terms over 3 terms) by turksvids Still Another Hard Trig Identity by turksvids Proving Trig Identities with t-results by Eddie W. Proving Simple Trigonometric Identities by Eddie W. The importance of mathematical proofs and manipulations intro part 1 by Jorge G. Pires The importance of mathematical proofs and manipulations intro part 2 by Jorge G. Pires Trigonometric Identities and Equations View all chapters 1 Fundamental Identities 2 Proving Identities 3 Solving Trigonometric Equations 4 Sum and Difference Identities 5 Double Angle Identities 6 Half-Angle Identities 7 Products, Sums, Linear Combinations, and Applications Prev Next