11th Class
Mathematics
Sample Paper
Maths Olympiad Model Test Paper-12
question_answer
If p and q are respectively the perpendiculars from the origin upon the straight lines, whose equations are \[x\,\sec \theta +y\,\,\cos ec\theta =a\] and\[x\cos \theta -y\,\,\sin \theta =a\,\,\cos 2\theta \], then \[4{{p}^{2}}+{{q}^{2}}\] is equal to _________.