If cosec A – cotA =1/x, then cosec A + cotA=?
Solution
Correct Answer: Option C
আমরা জানি,
cosec2 A – cot2 A = 1
or, (cosec A + cot A) (cosec A – cot A) = 1
or, (cosec A + cot A) × 1/x= 1
or, cosec A + cot A = x
অতএব cosec A + cot A =x
cosec2 A – cot2 A = 1
or, (cosec A + cot A) (cosec A – cot A) = 1
or, (cosec A + cot A) × 1/x= 1
or, cosec A + cot A = x
অতএব cosec A + cot A =x
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