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The value of 1 - 1 is cosecθ - cotθ sinθ
-
- 1
- cot θ
- cosec θ
- tan θ
Correct Option: B
Expression
| = | - | ||
| cosecθ - cotθ | sinθ |
| = | - cosecθ = cosec θ + cotθ – cosecθ = cotθ | |
| cosecθ - cotθ |
[cosec²θ – cot²θ = 1 & 1/sinθ = cosecθ]
Method-2 :
| = | |||||
| - | sinθ | ||||
| sinθ | sinθ | ||||
| = | - | - | = | ||||
| 1 - cosθ | sinθ | sinθ(1 - cosθ) | sinθ(1 - cosθ) |
| = | = | = cotθ | ||
| sinθ(1 - cosθ) | sinθ |
