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Objective Questions, MCQ (2 marks), , iL Ifcos A=, then tan A=?, 3 5, 5 ) 5, 2. If sin A= >, thencot A=?, 1, — 3, a) (b) V3, 3. Iftan 0 =, then cosec ® =?, 4 4, , 4. If cosec 6 = V'10, then sec 6 =?, 3 V10, a5 (b) 3, , 5 Iftan @ = ©, then cosec 6 =?, 17 8, a> o>, 6. Ifsin @ =<, then cos @ =?, , @)—— ga, Vea b, 7. If tan @ = V3, then sec @ =?, v3, 2, , , , 2, , a —_, a (b), 8. Ifsec@ =>, then sin @ =?, , Zz 24, (a) 2 (b) 7, , (=, , (c) =, , 2, , () a, , 17, (c) 15, , a, , 'b? — a?, , (c), , , , 1, (c) 2, , 24, (c) 25, , 9. ifsin 9=~3, then (cosec 0+ cot 8) =?, , (a) 2v3 (b) as, , (c) (2+ V3), , 4, (a), (d)1, , 5, (d) 3, , 2, Og, , 15, (d) 7, (a)?, , a, (d)2, , (d) None of these, , (d) V3

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4 ;, 10. If tan O=-;, then (sin 6+cos 0) =?, , Z 7, (a) 3 (b) i () z, , ay, , 3, 11. If 3x = cosec and — = cot @,then 3{ x*- 3.) =7, , x, , . 1 1, (a) 27 (b) 81 (c) 3, , 12. 1f2x =sec A and 2 =tan A, then 2{ x7.) =7, x, 1 1, > e)7 Os, , 13. If(tan @ + cot @) =5, then (tan*® + cot*@) =?, (a) 27 (b) 25 (24, , 14. If (cos 8+ sec 4) -3, then (cos?0 + sec”®) =?, , a 17 29, (a) ry (b) i (c) =, = shen (cnc O=2ec"8), 15. Iftan 0=—-, then (cosec0 + se) a?, -2 —3 2, a> (b) ©;, , (7sin 0+ 3cos 0), , 16. If7 tan 6 =4, then ?, , 1 5 3, @> &)> 7, , 17. If 3cot 0=4, then Gain 0—3cos 0) ?, (5 (b)3 5, , (asin @-—bcos 6) Zs, (asin 0+bcos 0), (@ -b*) a, , ) (a? +b?) ©) (a? +b?), , , , 18. Iftan 0=", then, , (a? +b?), , (a) @-b), , 5, (d) 7, il, (d) 3, , 1, (d) ie, , (d) 23, Ce, (a), (a>, (d)9, , b?, , (a) (a? +b?)