Prove that: `s e c^2theta+cos e c^2thetageq4` .

Prove that: 2s e c^2theta-s e c^4theta-2cos e c^2theta+cos e c^4theta=(1-t a n^8theta)/(t a n^4theta)

Prove: (sec^2theta-1)(cos e c^2theta-1)=1

P is a point and P Ma n dP N are the perpendicular form Ptoz-xa n dx-y planes. If O P makes angles theta,alpha,betaa n dgamma with the plane O M N and the x-y ,y-za n dz-x planes, respectively, then prove that cos e c^2theta=cos e c^2alpha+cos e c^2beta+cos e c^2gammadot

Prove: cos e c^2theta+sec^2theta=cos e c^2thetasec^2theta

If sintheta=3/4 , prove that sqrt((cos e c^2theta-cot^2theta)/(sec^2theta-1))=(sqrt(7))/3

Prove: cos e c\ thetasqrt(1-cos^2theta)=1

If cottheta=3/4 , prove that sqrt((sectheta-cos e c\ theta)/(sectheta+cos e c\ theta))=1/(sqrt(7))

The number of solution of sec^2theta+cos e c^2theta+2cos e c^2theta=8,0lt=thetalt=pi/2 is 4 (b) 3 (c) 0 (d) 2

If tan^2 theta= 1-e^2 prove that sec theta + tan^3 theta cosec theta = (2-e^2)^(3/2)

If tan theta=1/sqrt7 ,then (c o s e c^2theta-sec^2theta)/(c o s e c^2theta+sec^2theta)=?