Proving Identities - Page 3
Questions
- How do I prove this trigonometric identity?
- How do you prove that #9sec^2u - 5tan^2u = 5 + 4sec^2u#?
- If #sinalpha-cosalpha=p#, then #sin2alpha=#?
- How do you prove #tan(pi/4 + theta) - tan(pi/4 - theta) = 2tan2theta#?
- How do you verify #(sin z + cos z) (tan z + cot z) = sec z + csc z#?
- How does one verify #tanx+cosx/(1+sinx)=secx#?
- How do you find sin(16x) and cos(4x), if you know that cot(8x) = -2 and 8x is an element of II? Thank you in advance!
- How do you verify the identity #(1 + tan2u)(1 - sin2u) = 1#?
- How do you prove #sec^2(x)-tan^2(x)=1#?
- How to verify 2csc^2 (x) = ((1/(1-sinx))+((1/(1+sinx))?
- How do you use trigonometric identities to transform one side of the equation into the other #Cos theta Sec theta = 1#?
- How do you prove the identity #sec u - tan u = cos u/(1+sin u)# ?
- How do you verify #1-cos(2x)*sec^2(x) = (tan(x))^2#?
- Simplify cos x tan x + sin x cot x = ?
- How do you prove that #(1 + tan theta)[1 + tan(1/4 pi - theta)] = 2#?
- How do you prove : #Sin4x - cos4x + 1 = 2Sin2x#?
- Prove each of the following identities (a) sec x + tan x =cos x/1 − sin x (b) tan^2 x/tan^2 x + 1= sin^2 x?
- How do you prove the identity #1 / (1- cosx) + 1/ (1+ cosx) = 2 csc^2x#?
- How do you prove #\frac { \cos A + \sin A } { \cos A - \sin A } = \tan ( 45^ { \circ } + A )#?
- How do you verify the identity #-2cos^2theta=sin^4theta-cos^4theta-1#?