Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
+1 vote
187k views
in Mathematics by (68.8k points)
closed by

(1 + cos(pi/8))(1 + cos(3pi/8))(1 + cos(5pi/8))(1 + cos(7pi/8)) = 

(1) 1/2

(2) cos(pi/8)

(3) 1/8

(4) (1 + 2)/22

2 Answers

+3 votes
by (45.1k points)
selected by
 
Best answer

Correct option (3) 1/8

Explanation :

+1 vote
by (17.0k points)

Correct option is (3) 1/8

The given expression is

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

...