Corrected Pairs:
Step 1: The headquarters of CENTO (Central Treaty Organization) is located in Ankara, Turkey.
Step 2: The correct location for the SAARC (South Asian Association for Regional Cooperation) headquarters is Kathmandu, Nepal, not New Delhi.
Step 3: The Commonwealth Secretariat is situated in London, while NATO’s headquarters is in Brussels, Belgium, not Paris.
The slope of the tangent to the curve \( x = \sin\theta \) and \( y = \cos 2\theta \) at \( \theta = \frac{\pi}{6} \) is ___________.
Explain the construction of a spherical wavefront by using Huygens' principle.
The perpendicular distance of the plane \( r \cdot (3\hat{i} + 4\hat{j} + 12\hat{k}) = 78 \) from the origin is __________.