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Consider the following 1. (cosA)/(1-ta...

Consider the following
1. `(cosA)/(1-tanA)+(sinA)/(1-cotA)=sinA+cosA`
2. `(1-sinA-cosA)^2=2(1-sinA)(1+cosA)`
Which of the above is/are identity/identities?

A

1 only

B

2 only

C

Both 1 and 2

D

Niether 1 nor 2

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