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प्रश्न
Find the distance of the following points from the origin:
(ii) B(-5,5)
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उत्तर
B(-5,5)
Let O(0,0) be the origin.
`OB = sqrt((-5-0)^2 + (5-0)^2)`
`= sqrt((-5)^2 +(5)^2)`
`=sqrt(25+25)`
`=sqrt(50)`
`= sqrt(25xx2)`
`=5 sqrt(2)` units
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Case Study -2
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- Forward: As shown by players A, B, C and D.
- Midfielders: As shown by players E, F and G.
- Fullbacks: As shown by players H, I and J.
- Goalie: As shown by player K.
Using the picture of a hockey field below, answer the questions that follow:
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Case Study -2
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It is rectangular in shape - 100 yards by 60 yards. Goals consist of two upright posts placed equidistant from the centre of the backline, joined at the top by a horizontal crossbar. The inner edges of the posts must be 3.66 metres (4 yards) apart, and the lower edge of the crossbar must be 2.14 metres (7 feet) above the ground.
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- Forward: As shown by players A, B, C and D.
- Midfielders: As shown by players E, F and G.
- Fullbacks: As shown by players H, I and J.
- Goalie: As shown by player K.
Using the picture of a hockey field below, answer the questions that follow:
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