What is the value of cosec A ( 1 - cos A)( cosec A + cot A) ?
Answer & explanation
Correct answer: option 2
cosec A ( 1 - cos A)( cosec A + cot A)
= ( cosec A - cot A)( cosec A + cot A)
= ( cosec² A - cot² A )
{ we know, cosec² A - cot² A = 1 }
= 1
What is the value of cosec A ( 1 - cos A)( cosec A + cot A) ?
Correct answer: option 2
cosec A ( 1 - cos A)( cosec A + cot A)
= ( cosec A - cot A)( cosec A + cot A)
= ( cosec² A - cot² A )
{ we know, cosec² A - cot² A = 1 }
= 1