Question

Sin²theta + cosec²theta is greater than or equal to 2.prove it

Answer 1

We know that ...

Square of a real Number is greater than or equal to 0

So ( sintheta - 1/sintheta)^2 ≥ 0

or...
sin^2theta +1/sin^2theta-2sintheta.1/sintheta≥0

or...
sin^2theta + cosec^2theta -2≥0

or...

sin^2theta + cosec^2theta ≥2

Answer 2

Answer:

hope you get the answer

Step-by-step explanation:

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