" (ii) "27:x::63:84

Find the value of x in the proportions: a. 55:11: :x: 6 b. 27 :x::63: 84 c. 51 : 85 :: 57 : x d. x: 92 :: 87: 116

If A=[(2,-3),(-4,1)] then (3A^2+12A) is equal to (a) [(72,-84),(-63,51)] (b) [(51,63),(84,72)] (c) [(52,84),(63,72)] (d) [(72,-63),(-84,51)]

Compare the following : 63.84 and 57.98

Show that (without using table of trigonometric ratios) :(iii) sin63^@cos27^@+cos63^@sin27^@=1

Find the HCF of the following numbers : (a) 18, 48 (b) 30,42 (c) 18, 60 (d) 27, 63 (e) 36, 84 (f) 34, 102

Evaluate the following: (i) (cot40^@)/(tan50^@)-1/2((cos35^@)/(sin55^@)) (ii) ((sin27^@)/(cos63^@))^2-((cos63^@)/(sin27^@))^2

Solve the following: ((sin 27^@)/(cos 63^@))- ((cos 27^@)/(sin 63^@))^2

(csc ^ (2) 63 ^ (@) + tan ^ (2) 24 ^ (@)) / (cot ^ (2) 66 ^ (@) + sec ^ (2) 27 ^ (@)) + (sin ^ (2) 63 ^ (@) + cos63 ^ (@) sin27 ^ (@) + sin27 ^ (@)) / (2 (csc ^ (2) 65 ^ (@) - tan ^ (2) 25 ^ ( @)))

Which term of the A.P. 21 ,\ 42 ,\ 63 ,\ 84 ,\ dot is 420?