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Fast Track Ans1. What is the slope of the line whose inclination(ii) 60 N.C(iv) 90(vi) 150?(iii) 450(v) 1202. Find the inclination of the line whose slope is(ii)4(iii)3(iv) 0.Very Short An5. Show that the line joining (2,-3) and (- 5, 11 |
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Answer» slope of the line is equal to the tangent of the angle it makes from the horizontal axis.(i) tan(0°)=0(ii)tan(60°)=√3(iii)tan(45°)=1(iv)tan(90°)= vertical line(v)tan(120°)=tan(90°+30°)=-√3(vi)tan(150°)= -1/√3 2)(i) tan⁻¹(1)=45°(ii)tan⁻¹(1/4)(iii)tan⁻¹(3)(iv)tan⁻¹(0)=0° |
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