£ T8 SRR ——#—j‘" vf’jﬂ $00+ 11 509गाल हा हु

1.	£ T8 SRR ——#—j‘" vf’jﬂ $00+ 11 509गाल हा हुए था\|500+ (1,803T g i "९०४ ४४
Answer» sin^2 63 + sin^2 27/cos^2 17 + cos^2 73 [ Using sin x = cos (90 - x) cos x = sin (90 - x) sin^2 x + cos^2 x = 1 ] = sin^2 63 + cos^2 (90 - 27)/ sin^2 (90 - 17) + cos^2 73 = sin^2 63 + cos^2 63/ sin^2 73 + cos^2 73 = 1/1 = 1

£ T8 SRR ——#—j‘" vf’jﬂ $00+ 11 509गाल हा हुए था|500+ (1,803T g i "९०४ ४४

Answer»

sin^2 63 + sin^2 27/cos^2 17 + cos^2 73

[ Using sin x = cos (90 - x) cos x = sin (90 - x) sin^2 x + cos^2 x = 1 ]

= sin^2 63 + cos^2 (90 - 27)/ sin^2 (90 - 17) + cos^2 73

= sin^2 63 + cos^2 63/ sin^2 73 + cos^2 73

= 1/1

= 1