Tiêu đề Maths XI - Straigth lines - Angle between two lines .ppt.ppt ✅

STRAIGHT LINES


Now θ is an angle between (1) and (2) Thus θ= θ1- θ2 Since P(-b1,a1) satisfies eq. (1), the point lies on (1) Similarly Q(-b2,a2) lies on (2) O L M y P Q 2 1 x θ1 θ2 θ Let L, M be the projections of P, Q respectively on x-axis