# Integration

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4?

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In 6th step you took integral of tan theta/2 with dtheta. Take it with dtheta/2 then it will come right

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even option 3 is also possible

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Oh yes, integral of (tan theta /2) will be (ln 2sec theta/2)…I missed that 2! thanks!! @Bhavik_Yadav

Right! Option C is also correct! Thanks!! @Harish_R

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