The theme of the student-teacher relationship is central to "To Sir With Love." Initially, the students of the school are unruly and disrespectful towards Braithwaite, but as the story progresses, they start recognizing his dedication and understanding. Braithwaite's patience, kindness, and willingness to listen and learn from his students create a bond of mutual respect. This evolving relationship demonstrates how a teacher can impact their students beyond academics by fostering trust, respect, and personal growth. Ultimately, it highlights the transformative power of education.
Explain the construction of a spherical wavefront by using Huygens' principle.
The slope of the tangent to the curve \( x = \sin\theta \) and \( y = \cos 2\theta \) at \( \theta = \frac{\pi}{6} \) is ___________.