Proving Identities - Page 5
Questions
- How do you verify #Sec(x) - cos(x) = sin(x) * tan(x)#?
- How do you verify # (sin(theta)+cos(theta))^(2) + (sin(theta)-cos(theta))^(2)=2#?
- How do you find #\sin \frac { 11\pi } { 6}#?
- Can you prove #\sin 3a \cos a - \cos 3a \sin a = 2\sin a cosa#?
- #(sin^2 theta + cos^2 theta + cot^2 theta)/ (1+ tan^2 theta)= cot^2 theta#?
- How do you prove # cos ^2theta - sin ^2 theta = 1 - 2sin^2 theta #?
- How do you prove #(cos^2x + tan^2x ) / (cos^2x + sin^2x )-1= 0#?
- Provet that? : #cos(-x) -= cosx#
- How do you prove # tan^2(x) / (sec(x) - 1) = (sec(x) + 1)#?
- How do you verify #costheta(1-4sin^2theta)=costhetacos(2theta)-sinthetasin(2theta)#?
- How do I prove that #2 sin ((C+D)/2) cos ((C-D)/2) = sin C+sin D#?
- How do you verify the identity #1/tanbeta+tanbeta=sec^2beta/tanbeta#?
- How do you verify #(1 - cos x) / (1 + cos x) = (csc x - cot x)^2#?
- Evaluate #sin^4 15^@ + cos^4 15^@#?
- How do you prove #(tan^3x - 1) /( tanx - 1) = tan^2x + tanx + 1#?
- How do you prove #(tan3t-tant)/(1+tan3t*tant)=(2tant)/(1-tan^2t)#?
- How do you prove (sinx)(cosx)(tanx) + cos2x = 1 ?
- How do you simplify #(1 + sec theta)/sec theta = sin^2 theta/(1 - cos theta)#?
- Prove the following identity. ?
- How do you simplify #(1-tan^2(x)) /( 1+tan^2(x))#?