- Q if sec4Ѳ+ sec2 Ѳ=10+ tan4 Ѳ+tan2 Ѳ then sin2 Ѳ= ?
- the answer is 4/5 (4 divided b 5)
- Q if sec4Ѳ+ sec2 Ѳ=10+ tan4 Ѳ+tan2 Ѳ then sin2 Ѳ= ?
- the answer is 4/5 (4 divided b 5)
divyanshu , 11 Years ago
Grade 11
Trigonometry> Q if sec 4 Ѳ+ sec 2 Ѳ=10+ tan 4 Ѳ+tan 2 Ѳ...
1 AnswersSunil Raikwar
sec4Ѳ+ sec2Ѳ=10+ tan4Ѳ+tan2Ѳ
sec4Ѳ – tan4Ѳ = 10+tan2Ѳ – sec2Ѳ
(sec2Ѳ+tan2Ѳ)(sec2Ѳ-tan2Ѳ) =10-1
sec2Ѳ+tan2Ѳ=9
1+tan2Ѳ+tan2Ѳ=9
2tan2Ѳ = 8
tan2Ѳ = 4
therefore sin2Ѳ=4/5
sec4Ѳ – tan4Ѳ = 10+tan2Ѳ – sec2Ѳ
(sec2Ѳ+tan2Ѳ)(sec2Ѳ-tan2Ѳ) =10-1
sec2Ѳ+tan2Ѳ=9
1+tan2Ѳ+tan2Ѳ=9
2tan2Ѳ = 8
tan2Ѳ = 4
therefore sin2Ѳ=4/5
Approved Last Activity: 11 Years ago
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