Use app×
QUIZARD
QUIZARD
JEE MAIN 2026 Crash Course
NEET 2026 Crash Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
143 views
in Mathematics by (35.1k points)
closed by

\(\theta=\frac{\pi}{4}\) पर वक्र \(x=a \cos ^{3} x, y=a \sin ^{3} x\) के अभिलम्ब का ढाल ज्ञात करें।

1 Answer

+1 vote
by (36.2k points)
selected by
 
Best answer

यहाँ \(\frac{\mathrm{dr}}{\mathrm{d} \theta}=-3 \mathrm{a} \cos ^{2} \theta \cdot \sin \theta\)

\(\frac{d y}{d \theta}=3 a \sin ^{2} \theta \cdot \cos \theta\)

अब \(\frac{d y}{d x}=\cfrac{\frac{d y}{d \theta}}{\frac{d x}{d \theta}}=\frac{3 a \sin ^{2} \theta \cdot \cos \theta}{-3 a \cos ^{2} \theta \cdot \sin \theta}\)

अभिलम्ब की ढाल \(=-\frac{1}{\left(\frac{d y}{d x}\right)}\)

\(=\frac{1}{\tan \theta}\)

\(=\cot \theta\)

θ पर अभिलम्ब का ढाल \(=\frac{\pi}{2}\)

\(=\cot \frac{\pi}{4}\)

\(=1\)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...