Find the angle between the lines  and the plane 10x + 2y –

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsShort Answer Type

251. Find the angle between the line fraction numerator straight x minus 1 over denominator 1 end fraction space equals space fraction numerator straight y minus 2 over denominator negative 1 end fraction space equals space fraction numerator straight z plus 1 over denominator 1 end fraction and the plane 2x – y + z= 1. 
83 Views

252.

Find the angle between the line fraction numerator straight x plus 1 over denominator 3 end fraction space equals space fraction numerator straight y minus 1 over denominator 2 end fraction space equals space fraction numerator straight z minus 2 over denominator 4 end fraction and the plane 2x + y – 3z + 4 = 0.

97 Views

Advertisement

253. Find the angle between the lines fraction numerator straight x plus 1 over denominator 2 end fraction space equals space straight y over 3 space equals space fraction numerator straight z minus 3 over denominator 6 end fraction and the plane 10x + 2y – 11z = 3.


The equation of line is
         fraction numerator straight x plus 1 over denominator 2 end fraction space equals space straight y over 3 space equals space fraction numerator straight z minus 3 over denominator 6 end fraction
Its direction ratios are 2, 3, 6.
The equation of plane is
10x + 2y – 11 z = 3
∴  direction ratios of the normal to the plane are 10, 2, –11.
Let θ be the angle between the line and plane.
therefore space space space sin space straight theta space equals space fraction numerator open vertical bar left parenthesis 2 right parenthesis thin space left parenthesis 10 right parenthesis space plus space left parenthesis 3 right parenthesis thin space left parenthesis 2 right parenthesis space plus space left parenthesis 6 right parenthesis thin space left parenthesis negative 11 right parenthesis close vertical bar over denominator square root of 4 plus 9 plus 36 end root space square root of 100 plus 4 plus 121 end root end fraction
space space space space space space space space space space space space space space space space space space equals space fraction numerator open vertical bar 20 plus 6 minus 66 close vertical bar over denominator square root of 49 space square root of 225 end fraction space equals space fraction numerator open vertical bar negative 40 close vertical bar over denominator 7 cross times 15 end fraction space equals fraction numerator 40 over denominator 7 cross times 15 end fraction
therefore space space space space space sin space straight theta space equals space 8 over 21 space space space space space space space space space space space space space space space space space space space space space space space rightwards double arrow space space space straight theta space equals space sin to the power of negative 1 end exponent open parentheses 8 over 21 close parentheses.

96 Views

Advertisement
254. Find the angle between the line fraction numerator straight x minus 2 over denominator 3 end fraction space equals space fraction numerator straight y plus 1 over denominator negative 1 end fraction space equals space fraction numerator straight z minus 3 over denominator 2 end fraction and the plane 3x + 4y + z + 5 = 0.
91 Views

Advertisement
255.

Find the angle between the line straight r with rightwards arrow on top space equals space open parentheses straight i with hat on top space minus space straight j with hat on top space plus space straight k with hat on top close parentheses space plus space straight lambda space open parentheses 2 straight i with hat on top space minus space straight j with hat on top space plus space 3 space straight k with hat on top close parentheses and the plane straight r with rightwards arrow on top. space open parentheses 2 straight i with hat on top space plus space straight j with hat on top space minus space straight k with hat on top close parentheses space equals space 4

76 Views

256. Find the distance between the parallel planes:
2x – 3y + z + 3 = 0
and 4x – 6y + 2z + 5 = 0
86 Views

257. Find the distance between parallel planes:
2x  – y + 3z – 4 = 0 and 6x – 3y + 9z + 13 = 0.
125 Views

258. Find the distance between the planes straight r with rightwards arrow on top. space open parentheses straight i with hat on top space plus space 2 space straight j with hat on top space plus space space 3 space straight k with hat on top close parentheses space plus space 7 space equals 0 and straight r with rightwards arrow on top. space open parentheses 2 straight i with hat on top space plus space 4 space straight j with hat on top space plus space 6 space straight k with hat on top close parentheses space plus space 7 space equals space 0.
77 Views

Advertisement

 Multiple Choice QuestionsLong Answer Type

259. Find the length and coordinates of the foot of the perpendicular from the point (1, 1, 2) to the plane 2x – 2y + 4z + 5 = 0.
81 Views

260. Find the distance between the point P(6, 5, 9) and the plane determined by the points A(3, –1, 2), B(5, 2, 4) and C(– 1, – 1, 6).
74 Views

Advertisement