Listeners contacted us to correct the answer to a clue from last week's puzzle, giving NPR's Ayesha Rascoe and Weekend Edition puzzlemaster Will Shortz a lesson in trigonometry. OK, so hold on, Will.

CBSE Class 10 Maths Lesson Plan 2025: At the start of each academic session, the Central Board of Secondary Education (CBSE) provides updated and revised equipment to both students and teachers, ...