[" (iii) "pi x+y=9," (iii) "x=4y]

Write four solutions for each of the following equations: ( i )2x+y=7 (ii) pi x+y=9 (iii) x=4y

Write four solutions for each of the following equations: (i) 2x + y = 7 (ii) pi x+y = 9 (iii) x = 4y

Write four solutions for each of the following equations: (i) 2x+y=7 (ii) pix+y=9 (iii) x=4y

If sin x=(12)/(13) "and sin " y= (4)/(5) " where " (pi)/(2) lt x lt pi " and " 0 lt y lt .(pi)/(2) find the values of (i) " sin " (x+y) " "(ii) " cos " (x+y) " "(iii) " tan " (x-y)

if cos x=(3)/(5) " and cos " y=(-24)/(25) " where " .(3pi)/(2) lt x lt 2 pi " and " pi lt y lt .(3pi)/(2) find the values of (i) " sin (x+y) "" ""(ii) cos (x-y) "" ""(iii) tan (x+y) "

Factorise the following using appropriate identities:(i) 9x^2+6x y+y^2 (ii) 4y^2-4y+1 (iii) x^2-(y^2)/(100)

Find the incentre of a triangle formed by the lines x "cos" (pi)/(9) + y "sin" (pi)/(9) = pi, x "cos" (8pi)/(9)+ y "sin" (8pi)/(9) = pi " and x "cos" (13pi)/(9) + y "sin" ((13pi)/(9)) = pi.

Find the incentre of a triangle formed by the lines x "cos" (pi)/(9) + y "sin" (pi)/(9) = pi, x "cos" (8pi)/(9)+ y "sin" (8pi)/(9) = pi " and x "cos" (13pi)/(9) + y "sin" ((13pi)/(9)) = pi.

Factories the following using appropriate identities: (i) 9x^2+6xy+y^2 (ii) 4y^2-4y+1 (iii) x^2-y^2/100