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∠Y is the right angle of the trianlge XYZ. If XY = 2 √6 cm and XZ – YZ = 2cm, then the value of (secX + tanX) is :
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1 √6
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1 2√3
- 2√6
- √6
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Correct Option: D

XY = 2 6 cm
XY – YZ = 2 cm. ...(i)
∴ XZ2 = XY2 + YZ2
⇒ XZ2 - YZ2 = (2√6)2
⇒ XZ2 - YZ2 = 24
| ∴ | = | |||
| XZ - YZ | 2 |
⇒ XZ + YZ = 12 ....(ii)
| ⇒ secX + tan X = | + | |||
| XY | XY |
| ⇒ secX + tan X = | = | |
| XY |
| ⇒ secX + tan X = | = | = √6 | ||
| XY | 2√6 |