1.

240 [tan112-ta 10121-tanBi2 tan121.sequaltotan θ / 21 tan 0/211tan θQ.40|tan θ / 2sin θcos θIL-tan θ / 2]İs equal to1-cos®cos θ sinθcos θ-sin0|(B)l-sin θcos θ](C)cos θ](D) of thesesin θsin θ

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