-1tan θ-sec θ=sece-tan θ虱邓 T TwTER升8.4sin2 63o+ sin2 27cos 17 – InterviewSolution

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1.	-1tan θ-sec θ=sece-tan θ虱邓 T TwTER升8.4sin2 63o+ sin2 27cos 170 + cos 73°(i) sin 250 cos 65° + cos 25 sin 65°(A) 1(B)シ(C) 8(만 1(sec A + tan A) (1-sin A)TTat:(A) sec A (B) sin A(C) cos(iv)
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