रेखा  और समतल 10x + 2y - 11z - 3 = 0 के बीच का कोण ज्ञात करें।

  1. इनमें से कोई नहीं

Answer (Detailed Solution Below)

Option 1 :
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अवधारणा:

यदि θ रेखा  और समतल a2 x + b2 y + c2 z + d = 0 के बीच का कोण है तो 

गणना:

दिया हुआ: रेखा का समीकरण  है और समतल का समीकरण 10x + 2y - 11z - 3 = 0 है।

जैसा कि हम जानते हैं कि रेखा  और समतल a2 x + b2 y + c2 z + d = 0 के बीच का कोण इसके द्वारा दिया जाता है: 

यहाँ a1 = 2, b1 = 3, c1 = 6, a2 = 10, b2 = 2 और c2 = - 11

⇒ a1 ⋅ a2 + b1 ⋅ b2 + c1 ⋅ c2 = 20 + 6 - 66 = - 40

इसलिए, विकल्प A सही उत्तर है।

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