Sarthaks APP
0 votes
in Mathematics by (7.5k points)
edited by
How to find the sign of sin2 sin3 sin4 ?

Please log in or register to answer this question.

1 Answer

+1 vote
by (9.9k points)
edited by

Apply Trigonometric Identity rule below and you will get zero as answer.

sin(mx)sin(nx) = (1/2)[ x cos(m-n) - x cos(m+n) ] 

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.