How to verify identities Videos

• 1. PreCalculus - Trigonometry: Trig Identities (5 of 57) Verify the Identity: 1
• 2. Verify Identities that require use of double angle identities
• 3. How to Verify your Identity at LeoVegas
• 4. Pre-Calculus - Math tutorial - Learn how to verify a trig identity cosx+sinx tanx=secx
• 5. How to verify trig identities graphically (Steps to success.)
• 6. Pre-Calculus - How to verify a trig identity cot^3(t)/csc(t) = cost(csc^2(t)-1)
• 7. Pre-Calculus - Video tutorial - Learn how to Verify a trig identity cot^2(x)/csc(x) =cscx -sinx
• 8. Pre-Calculus - How to verify an identity by combining terms cosx+tanx sinx=secx
• 9. Calculator Hacks 2: Verify identities using Casio fx-85GT

PreCalculus - Trigonometry: Trig Identities (5 of 57) Verify the Identity: 1

User Comments

blackfoxmp5 commented on 09 Mar 2015

I don't get where the cos (x) came from. I was lost after saying take the product of the two terms. Are you still taking the conjugate of the terms?

blackfoxmp5 commented on 09 Mar 2015

+blackfoxmp5 actually I see where cos x comes from, but now I'm baffled regarding why the sin term was squared and was not distributed like the original problem.

blackfoxmp5 commented on 09 Mar 2015

+Michel van Biezen at first you stopped at ( 1+2 sin x + sin^2 x ) / cos^2 x and then realized that there was a problem. You did squared the 1-sin x term over cos x after pointing back to the beginning of the problem. I'm confused about how you got cos x in the denominator after redoing the problem. Thanks!

Michel van Biezen commented on 09 Mar 2015

Not sure which cos x you are referring to.Are you asking about (sin x)*2 + (cos x)^2 = 1?If yes, that is a basis identity in trigonometry.  Look at the videos that explain those.

Verify Identities that require use of double angle identities

How to Verify your Identity at LeoVegas

Pre-Calculus - Math tutorial - Learn how to verify a trig identity cosx+sinx tanx=secx

How to verify trig identities graphically (Steps to success.)

Pre-Calculus - How to verify a trig identity cot^3(t)/csc(t) = cost(csc^2(t)-1)

User Comments

TheKhalil1990 commented on 28 Mar 2012

I'm currently in college algebra, and your videos have risen my grade from low C to high B's, thank you.

Mr. McLogan's Math Channel commented on 29 Mar 2012

sweet! you deserve the credit, great job staying with it

Pre-Calculus - Video tutorial - Learn how to Verify a trig identity cot^2(x)/csc(x) =cscx -sinx

User Comments

Kodex1410PL commented on 13 Dec 2015

I can't matematic ant inglish

Mr. McLogan's Math Channel commented on 13 Dec 2015

+Kodex1410PL not sure what that means

Pre-Calculus - How to verify an identity by combining terms cosx+tanx sinx=secx

Calculator Hacks 2: Verify identities using Casio fx-85GT