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If `x^2+2h x y+y^2=0` represents the equation of the straight lines through the origin which make an angle `alpha` with the straight line `y+x=0` (a)`s e c2alpha=h` `cosalpha` (b)`=sqrt(((1+h))/((2h)))` (c)`2sinalpha` `=sqrt(((1+h))/h)` (d) `cotalpha` `=sqrt(((1+h))/((h-1)))`

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If x^2+2h x y+y^2=0 represents the equation of the straight lines through the origin which make an angle alpha with the straight line y+x=0 s e c2alpha=h cosalpha =sqrt(((1+h))/((2h))) 2sinalpha =sqrt(((1+h))/h) (d) cotalpha =sqrt(((1+h))/((h-1)))

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CENGAGE ENGLISH-STRAIGHT LINES-All Questions
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