one by tan theta + tan theta is equal to 2 find tan square theta + cot square theta
Answers
Answered by
1
Answer:
2
Step-by-step explanation:
hope this helps......
Attachments:
Answered by
1
Answer:
2
Step-by-step explanation:
1/tan Ф+tanФ=2 given
⇒1/sinФ/cosФ+sinФ/cosФ=2
⇒cosФ/sinФ+sinФ/cosФ=2
⇒cos²Ф+sin²Ф/sinФcosФ=2
⇒1/sinФcosФ=2 [∵cos²Ф+sin²Ф=1]
⇒sinФcosФ=1/2 ⇒(sinФcosФ)²=1/4
now,
tan²Ф+cot²Ф
⇒sin²Ф/cos²Ф+cos²Ф/sin²Ф
⇒(sin²Ф)²+(cos²Ф)²/sin²Фcos²Ф
⇒(sin²Ф)²+(cos²Ф)²+2sin²Фcos²Ф-2sin²Фcos²Ф/sin²Фcos²Ф
⇒(sin²Ф+cos²Ф)²-2sin²Фcos²Ф/sin²Фcos²Ф
⇒(1)²-2×(1/2)²/(sinФcosФ)²
⇒1-2×1/4/1/4
⇒1-1/2/1/4
⇒1/2/1/4
⇒2 ans
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