Two Curves Are Said to Be Orthogonal If Their Tangent $$y - \frac { 7 } { 4 } x = \frac { \pi } { 2 } , \quad x = \frac { 7 } { 4 } \cos y$$

question 48

Essay

Two curves are said to be orthogonal if their tangent lines are perpendicular at each point of
intersection of the curves.Show that the curves of the given equations are orthogonal. $$y - \frac { 7 } { 4 } x = \frac { \pi } { 2 } , \quad x = \frac { 7 } { 4 } \cos y$$

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