+6 votes
in Mathematics by (128k points)
edited by

Prove that [(sin 7x + sin 5x ) + (sin 9x + sin 3x )] / [(cos 7x + cos 5x ) + (cos 9x + cos 3x )] = tan 6x

1 Answer

+4 votes
by (13.6k points)
selected by
Best answer

Proof is given as:

by (16 points)

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.