Evaluate without using tables:
0 0 2 0 2 0
0 0 0 0 0
secθcos (90 θ) tan θcot(90 θ) (sin 35 sin 55 )
tan10 tan 20 tan 45 tan 70 tan80
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Answer is 1 by using tan (90-theta)=cot(theta)
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