If ` sin theta=a/b ,t h e ncostheta=?`

If tan theta = 1/b , then ( a sin theta - b cos theta )/( a sin theta + b cos theta) is

If sin(picostheta)=cos(pi sintheta),t h e n sin2theta=

The curve represented by x= a( cos h theta + sin h theta) , y =b ( cos h theta - sin h theta) is

If int(sin3 theta+sin theta)cos theta e^(sin theta)dth eta=(A sin^(3)theta+B cos^(2)theta+C sin theta+D cos theta+E)e^(sin theta)+F ,then

If E(theta)=[[cos theta, sin theta] , [-sin theta, cos theta]] then E(alpha) E(beta)=

If E(theta)=[[cos theta, sin theta] , [-sin theta, cos theta]] then E(alpha) E(beta)=

If tan^2theta=2tan^2phi+1,t h e ncos2theta+sin^2phi equals (a) -1 (b) 0 (c) 1 (d) none of these

If x= e^(theta )(sin theta - cos theta ) , y= e^(theta ) ( sin theta + cos theta ) then (dy)/(dx) at theta =(pi)/(4) is

If x= e^(theta )(sin theta - cos theta ) , y= e^(theta ) ( sin theta + cos theta ) then (dy)/(dx) at theta =(pi)/(4) is

A line makes an angle theta with each of the x-and z-axes. If the angle beta, which it makes with the y-axis, is such that sin^2beta=3sin^2theta,t h e ncos^2theta equals a. 2/3 b. 1/5 c. 3/5 d. 2/5