Let `0 lt alpha lt (pi)/(2) ` be a fixed angle . If `p=(costheta, sin theta) and Q(cos(alpha-theta))`, then Q is obtained from P by

Let 0lealphalepi/2 be a fixed angle.if p=(costheta,sintheta) and Q=(cos(alpha-theta),sin(alpha-theta)) then Q is obtained from P by

Let 0 lt alpha lt pi//4 be a fixed angle. If P=(cos theta, sin theta) and Q=(cos (alpha-theta), sin(alpha-theta)) , then Q is obtained from P by:

Let 0lt alpha lt pi //2 be a fixed angle. If P=(cos theta, sin theta) and Q=(cos (alpha-theta),sin (alpha-theta)) . then Q is obtained from P by

Let 0

Let 0< alpha

If 0 lt alpha lt (pi)/(2) and sin alpha + cos alpha = sqrt2, then the value of cos 3 alpha is-

If 0 lt theta lt pi/2 and sin 2 theta = cos 3 theta, then the value of sin theta is-