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Orthogonal trajectories of family of the...

Orthogonal trajectories of family of the curve `x^(2/3)+y^2/3=a^((2/3))` , where `a` is any arbitrary constant, is (a) `( b ) (c) (d) x^(( e ) (f) (g)2/( h )3( i ) (j) (k))( l )-( m ) y^(( n ) (o) (p)2/( q )3( r ) (s) (t))( u )=c (v)` (w) (b) `( x ) (y) (z) x^(( a a ) (bb) (cc)4/( d d )3( e e ) (ff) (gg))( h h )-( i i ) y^(( j j ) (kk) (ll)4/( m m )3( n n ) (oo) (pp))( q q )=c (rr)` (ss) (c) `( d ) (e) (f) x^(( g ) (h) (i)4/( j )3( k ) (l) (m))( n )+( o ) y^(( p ) (q) (r)4/( s )3( t ) (u) (v))( w )=c (x)` (y) (d) `( z ) (aa) (bb) x^(( c c ) (dd) (ee)1/( f f )3( g g ) (hh) (ii))( j j )-( k k ) y^(( l l ) (mm) (nn)1/( o o )3( p p ) (qq) (rr))( s s )=c (tt)` (uu)

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An angle is double of its supplement. The measure of the angle is (a) ( b ) (c) (d) (e) 60^(( f )0( g ))( h )\ ( i ) (j) (b) ( k ) (l) (m) (n) 120^(( o )0( p ))( q ) (r) (s) (t) ( u ) (v) (w) (x) 40^(( y )0( z ))( a a ) (bb) (cc) (d) ( d d ) (ee) (ff) (gg) 80^(( h h )0( i i ))( j j ) (kk) (ll)

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