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Question

(i) 23(cos4 30osin4 45o)3(sin2 60osec2 45o)+14cot2 30o

(ii) 4(sin4 30o+cos4 60o)23(sin2 60ocos2 45o)+12tan2 60o

(iii) sin 50ocos 40o+cosec 40osec 50o4 cos 50o cosec 40o

(iv) tan 35o tan 40o tan 45o tan 50o tan 55o

(v) cosec(65o + θ)sec(25oθ)tan(55oθ)+cot(35o+θ)

(vi) tan 7o tan 23o tan 60o tan 67o tan 83o

(vii) 2 sin 68ocos 22o2 cot 15o5 tan 75o3 tan 45o tan 20o tan 40o tan 50o tan 70o5
(viii)3 cos 55o7 sin 35o4(cos 70o cosec 20o)7(tan 5o tan 25o tan 45o tan 65o tan 85o)
(ix) sin 18ocos 72o+3{tan 10o tan 30o tan 40o tan 50o tan 80o}
(x) cos 58osin 32o+sin 22ocos 68ocos 38o cosec 52otan 18o tan 35o tan 60o tan 72o tan 55o

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Solution

(i) 11324

(ii) 116

(iii) -2

(iv) 1

(v) 0

(vi) 3

(vii) 1

(viii) -17

(ix) 2

(x) 633


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