

Maths Crash Course - Live lectures + all videos + Real time Doubt solving!
Ex 3.3
Ex 3.3, 2 Important
Ex 3.3, 3 Important
Ex 3.3, 4
Ex 3.3, 5 (i) Important
Ex 3.3, 5 (ii)
Ex 3.3, 6 Important
Ex 3.3, 7
Ex 3.3, 8 Important
Ex 3.3, 9 Important
Ex 3.3, 10
Ex 3.3, 11 Important
Ex 3.3, 12
Ex 3.3, 13 Important
Ex 3.3, 14
Ex 3.3, 15
Ex 3.3, 16 Important You are here
Ex 3.3, 17
Ex 3.3, 18 Important
Ex 3.3, 19
Ex 3.3, 20
Ex 3.3, 21 Important
Ex 3.3, 22 Important
Ex 3.3, 23 Important
Ex 3.3, 24
Ex 3.3, 25
Ex 3.3
Last updated at Sept. 3, 2021 by Teachoo
Maths Crash Course - Live lectures + all videos + Real time Doubt solving!
Ex 3.3, 16 Prove that 9 5 /( 17 3 ) = 2 / 10 Taking L.H.S 9 5 /( 17 3 ) We solve cos 9x cos 5x & sin 17x sin 3x seperately Now, 9 5 /( 17 3 ) = ( 2 sin (7x) sin (2x) )/(2 (10x)sin (7x) ) = sin (2x) / (10x) = R.H.S So, L.H.S. = R.H.S. Hence proved