`(tan (45^(@) + alpha ) + tan ( 45^(@) - alpha ))/( cot (45^(@) + alpha ) + cot ( 45^(@) - alpha ))=`

Which of the following identities,wherever defined,hold(s) good? (a) cot alpha-tan alpha=2cot2 alpha(b)tan(45^(@)+alpha)-tan(45^(@)-alpha)=2cos ec2 alpha(c)tan(45^(@)+alpha)+tan(45^(0)-alpha)=2sec2 alpha(d)tan alpha+cot alpha=2tan2 alpha

The expression tan ^(2) alpha+cot ^(2) alpha is

tan alpha + 2 tan 2alpha + 4 tan 4 alpha + 8 cot 8 alpha =

tan alpha + 2 tan 2alpha + 4 tan 4 alpha + 8 cot 8 alpha =

sin^(2) alpha * tan alpha + cos^(2) alpha * cot alpha + 2 sin alpha cos alpha =

Which of the following identities, wherever defined, hold(s) good? (a)cotalpha-tanalpha=2cot2alpha (b)tan(45^0+alpha)-tan(45^0-alpha)=2cos e c2alpha (c)tan(45^0+alpha)+tan(45^0-alpha)=2sec2alpha (d)tanalpha+cotalpha=2tan2alpha

Which of the following identities, wherever defined, hold(s) good? (a)cotalpha-tanalpha=2cot2alpha (b)tan(45^0+alpha)-tan(45^0-alpha)=2cos e c2alpha (c)tan(45^0+alpha)+tan(45^0-alpha)=2sec2alpha (d)tanalpha+cotalpha=2tan2alpha

Which of the following identities, wherever defined, hold(s) good? (a) cotalpha-tanalpha=2cot2alpha (b) tan(45^0+alpha)-tan(45^0-alpha)=2cos e c2alpha (c) tan(45^0+alpha)+tan(45^0-alpha)=2sec2alpha (d) tanalpha+cotalpha=2tan2alpha

If tan alpha + cot alpha =m , then: tan^(4)alpha +cot^(4)alpha=