यदि और  तो और के बीच का कोण ज्ञात कीजिए। 

  1. π / 2
  2. π / 3
  3. π / 6
  4. π / 4

Answer (Detailed Solution Below)

Option 2 : π / 3
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Detailed Solution

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संकल्पना:

माना कि  और  के बीच का कोण  है। 

 

गणना:

माना कि,  और के बीच का कोण  है। 

दिया गया है, 

दोनों पक्षों का वर्ग करने पर, हमें निम्न प्राप्त होता है 

⇒  = π / 3

अतः यदि  और  तो  और के बीच का कोण π / 3 है। 

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