Question

csc*2 A-1/cotA pls answer....​

Answer 1

Answer:

L.H.S=

cosA+sinA−1

cosA−sinA+1

Divide and multiply by sinA

cscA−cotA+1

cscA+cotA−1

using identity csc

2

A−cot

2

A=1

cscA−cotA+(csc

2

A−cot

2

A)

cscA+cotA−(csc

2

A−cot

2

A)

cscA−cotA+(cscA+cotA)(cscA−cotA)

cscA+cotA−(cscA+cotA)(cscA−cotA)

cotA−cscA+1

[1−(cscA−cotA)]×(cscA+cotA)

=cscA+cotA

=R.H.S

hence proved

Answer 2

Answer:

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