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If sin θ + cos θ = 5 , the value of tan² θ + 1 is sin θ - cos θ 4 tan² θ - 1
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25 16 -
41 9 -
41 40 -
40 41
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Correct Option: C
= | = | sin θ - cos θ | 4 |
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⇒ | = | tan θ - 1 | 4 |
⇒ 4 tanθ + 4 = 5 tanθ – 5
⇒ tanθ = 9
⇒ | = | 2 | 5 - 4 |
(By componendo and dividendo)
∴ | = | = | tan²θ - 1 | (9)² - 1 | 81 - 1 |
= | = | 80 | 40 |