[" (ii) "cos^(2)theta=cos^(2)alpha],[rAr...

[" (ii) "cos^(2)theta=cos^(2)alpha],[rArr((1+cos2 theta))/(2)=((1+cos2 alpha))/(2)],[rArr cos2 theta=cos2 alpha],[rArr2 theta=2n pi+-2 alpha],[rArr theta=(n pi+-alpha)," where "n in I]

Similar Questions

Explore conceptually related problems

Prove that: cos^2theta=cos^2alpha then theta=npi+-alpha,n in Z

General term ( sin^2 theta = sin^2 alpha , cos^2 theta = cos^2 alpha, tan^2 theta= tan^2 alpha)

Prove that: cos^(2)theta=cos^(2)alpha then theta=n pi+-alpha,n in Z

Prove that cos^(2)theta + cos^(2)(alpha + theta) – 2cos alpha *cos theta* cos(alpha +theta) is independent of theta .

Prove that the general solution of cos theta=cos alpha is given by :theta=2n pi+-alpha where n in Z.

Show that cos^(2)theta+cos^(2)theta(alpha+theta)-2cos alpha cos theta cos(alpha+theta) is independent of theta.

If tan theta=(sin alpha-cos alpha)/(sin alpha+cos alpha), prove that 2cos^(2)theta=1+sin2 alpha

Show that: cos^(2)theta+cos^(2)(alpha+theta)-2cos alpha cos theta cos(alpha+theta) is independent of theta.