Sin20.Sin40.sin60.sin80=3/16 (prove that )
CBSE, JEE, NEET, CUET
Question Bank, Mock Tests, Exam Papers
NCERT Solutions, Sample Papers, Notes, Videos
Posted by Amarjit Kumar 6 years, 7 months ago
- 1 answers
Test
Related Questions
Posted by Sethpoulou Apoulou 1 year, 5 months ago
- 0 answers
Posted by Ananya Sv 1 year, 5 months ago
- 1 answers
Posted by Ashish Chaudhary 1 year, 4 months ago
- 1 answers
Posted by Nitin Kumar 1 year, 4 months ago
- 1 answers
Posted by Manoj Thakur 1 year, 4 months ago
- 0 answers
Posted by Sabin Sultana 1 year, 4 months ago
- 0 answers
Posted by Sana Dharwad 1 year, 4 months ago
- 0 answers
Posted by Gurleen Kaur 1 year, 5 months ago
- 0 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Gaurav Seth 6 years, 7 months ago
sin20. sin 40. sin60. sin80
=> sin60[sin20.sin40.sin80]
=>√3/2[sin20.sin(60-20).sin(60+20)]
=>√3/2[sin 3(20)/4]
=>√3/2[sin 60/4]
=>√3/2[√3/2*4]
=>√3/2*√3/8
=3/16
2Thank You