1. ABC āĻāĻāĻāĻŋ āϤā§āϰāĻŋāĻā§āĻāĨ¤ sinâĄ\(\cfrac{(B+C)}{2}= \)
(a) sinâĄ\(\cfrac{A}{2}\) (b) sinA (c) cosA (d) cos⥠\(\cfrac{A}{2}\)
2. ABC āĻāĻāĻāĻŋ āϤā§āϰāĻŋāĻā§āĻ sin\(\cfrac{(B+C)}{2}\) =
(a) sinâĄ\(\cfrac{A}{2}\) (b) cosâĄ\(\cfrac{A}{2}\) (c) sinA (d) cosA
3. tanθcos60° = \(\cfrac{â3}{2}\) āĻšāϞ⧠sin(θâ15°) āĻāϰ āĻŽāĻžāύ-
(a) \(\cfrac{1}{â2}\) (b) 1 (c) â2 (d) 0
4. āϝāĻĻāĻŋ \(\cfrac{sinθ+cosθ}{sinθ-cosθ}=\cfrac{3}{2}\) āĻšāϝāĻŧ, āϤāĻžāĻšāϞ⧠cosθ=
(a) \(\cfrac{1}{5}\) (b) \(\cfrac{3}{2}\) (c) \(\cfrac{1}{\sqrt{26}}\) (d) āĻā§āύā§āĻāĻŋāĻ āύāϝāĻŧ
5. sin51\(^o\)=\(\cfrac{a}{\sqrt{a^2+b^2}}\) āĻšāϞ⧠tan51\(^o\)+tan39\(^o\) - āĻāϰ āĻŽāĻžāύ āĻāϤ ?
(a) \(\cfrac{a^2-b^2}{ab}\) (b) \(\cfrac{a^2+b^2}{2ab}\) (c) \(\cfrac{a^2+b^2}{ab}\) (d) \(\cfrac{a^2-b^2}{2ab}\)
6. \(\cfrac{sin \theta}{cosec \theta}+\cfrac{cos \theta}{sec \theta}-2\) āĻāϰ āĻŽāĻžāύ āĻšāĻŦā§ -
(a) 0 (b) -1 (c) 4 (d) āĻā§āύā§āĻāĻŋāĻ āύāϝāĻŧ
7. \(tan \theta =\cfrac{x}{y}\) āĻšāϞ⧠\(\cfrac{xsin\theta-ycos\theta}{xsin\theta+ycos\theta}\) āĻāϰ āĻŽāĻžāύ āĻāϤ?
(a) \(\cfrac{x^2+y^2}{x^2-y^2}\) (b) \(\cfrac{x-y}{x+y}\) (c) \(\cfrac{x+y}{x-y}\) (d) \(\cfrac{x^2-y^2}{x^2+y^2}\)
8. \(\cfrac{4}{sec^2âĄÎ¸} +\cfrac{1}{1+cot^2âĄÎ¸} +3sin^2âĄÎ¸\) āĻāϰ āĻŽāĻžāύ āĻāϤ?
9. \(\cfrac{sinθ+cosθ}{sinθ-cosθ}=7\) āĻšāϞ⧠\(tanθ\) āĻāϰ āĻŽāĻžāύ āĻāϤ?
10. āĻŽāĻžāύ āύāĻŋāϰā§āĻŖāϝāĻŧ āĻāϰā§: \(\cfrac{1-sin^2⥠30°}{1+sin^2⥠45°} à \cfrac{cos^2⥠60°+cos^2⥠30°}{cosec^2 90°-cot^2⥠90°}\)\( Ãˇ(sin 60°.tan 30°)\)
11. āĻŽāĻžāύ āύāĻŋāϰā§āĻŖāϝāĻŧ āĻāϰā§âļ \(3 tan^2⥠45°-sin^2⥠60° \) \(-\cfrac{1}{3} cot^2⥠30°-\) \(\cfrac{1}{8} sec^2⥠45°\)
12. āϝāĻĻāĻŋ \(cotθ=\cfrac{x}{y}\) āĻšāϝāĻŧ,āϤāĻŦā§ āĻĒā§āϰāĻŽāĻžāĻŖ āĻāϰ⧠āϝā§, \(\cfrac{xcosθ-ysinθ}{xcosθ+ysinθ}=\cfrac{x^2-y^2}{x^2+y^2}\)
13. āĻŽāĻžāύ āύāĻŋāϰā§āĻŖāϝāĻŧ āĻāϰā§: \(\cfrac{5 cos^2âĄ\cfrac{Ī}{3} +4 sec^2âĄ\cfrac{Ī}{6}-tan^2âĄ\cfrac{Ī}{6}}{sin^2\cfrac{âĄĪ}{6}+cos^2âĄ\cfrac{Ī}{6}}\)
14. \(\cfrac{sinθ}{x}=\cfrac{cosθ}{y}\) āĻšāϞā§, āĻĒā§āϰāĻŽāĻžāĻŖ āĻāϰ⧠āϝ⧠, \(sinθâcosθ=\cfrac{xây}{\sqrt{x^2+y^2}}\)āĨ¤ Madhyamik 2017
15. \(\cfrac{cos53^o}{sin37^o}\)-āĻāϰ āϏāϰāϞāϤāĻŽ āĻŽāĻžāύ _____āĨ¤ Madhyamik 2019
16. āĻŽāĻžāύ āύāĻŋāϰā§āĻŖāϝāĻŧ āĻāϰ⧠: \(\cfrac{4}{3}cot^230^o+3sin^260^oâ2cosec^260^o\) \(â\cfrac{3}{4}tan^230^o\) Madhyamik 2019
17. āϝāĻĻāĻŋ sin17\(^o\)=\(\cfrac{x}{y}\) āĻšāϝāĻŧ, āϤāĻžāĻšāϞ⧠āĻĻā§āĻāĻžāĻ sec17\(^o\)âsin73\(^o\)=\(\cfrac{x^2}{y\sqrt{y^2âx^2}}\) Madhyamik 2020
18. āĻŽāĻžāύ āύāĻŋāϰā§āĻŖāϝāĻŧ āĻāϰ⧠: \(\cfrac{5cos^2\cfrac{\pi}{3}+4sec^2\cfrac{\pi}{6}-tan^2\cfrac{\pi}{4}}{sin^2\cfrac{\pi}{6}+cos^2\cfrac{\pi}{6}}\) Madhyamik 2020
19. āϏāĻŽāĻžāϧāĻžāύ āĻāϰā§: \(\cfrac{\sin \theta-\cos \theta}{\sin \theta+\cos \theta}=\cfrac{1-\sqrt3}{1+\sqrt3}\) Madhyamik 2014
20. \(\tan A=\cfrac{x}{y}\), \(\cfrac{\cos A-\sin A}{\cos A+\sin A}\) -āĻāϰ āĻŽāĻžāύ āύāĻŋāϰā§āĻŖā§ āĻāϰ⧠āĨ¤ Madhyamik 2012
21. āĻŽāĻžāύ āύāĻŋāϰā§āĻŖā§ āĻāϰā§: \(\cfrac{1-\sin^2 30°}{1+\sin^2 45°}\times \cfrac{\cos^2 60°+\cos^2 30°}{cosec^2 90°-\cot^2 90°}\) \(\div (\sin 60° \tan 30°)\) Madhyamik 2007
22. \(\cfrac{\sin \theta+\cos \theta}{\sin \theta-\cos \theta}=3\) āĻšāϞā§, \(\sin^4 \theta-\cos^4\theta\)-āĻāϰ āĻŽāĻžāύ āύāĻŋāϰā§āĻŖā§ āĻāϰ⧠āĨ¤ Madhyamik 2006
23. āĻŽāĻžāύ āύāĻŋāϰā§āĻŖā§ āĻāϰā§: \(\cfrac{(\sin 0°+\sin 60°)(\cos 60°+\cot 45°)}{(\cot 60°+\tan 30°)(cosec 30°-cosec 90°)}\) Madhyamik 2005
24. \(\cfrac{\sin \theta+\cos \theta}{\sin \theta-\cos \theta}=5\) āĻšāϞā§, \(\tan\theta\)-āĻāϰ āĻŽāĻžāύ āĻāϤ ? Madhyamik 2003
25. \(\tan\theta=\cfrac{x}{y}\) āĻšāϞ⧠\(\cfrac{x\sin\theta-y\cos\theta}{x\sin\theta+y\cos\theta}\) -āĻāϰ āĻŽāĻžāύ āĻāϤ?
(a) \(\cfrac{x^2-y^2}{x^2+y^2}\) (b) \(\cfrac{y^2-x^2}{x^2+y^2}\) (c) \(\cfrac{x^2+y^2}{y^2-x^2}\) (d) āĻā§āύā§āĻāĻŋāĻ āύā§
26. āϝāĻĻāĻŋ \(\cot \theta=\cfrac{x}{y}\) āĻšā§, āϤāĻŦā§ \(\cfrac{x\cos\theta-y\sin\theta}{x\cos\theta+y\sin\theta}\) āĻāϰ āĻŽāĻžāύ āĻšā§ -
(a) \(\cfrac{x^2+y^2}{x^2-y^2}\) (b) \(\cfrac{x^2}{x^2-y^2}\) (c) \(\cfrac{x^2}{x^2-y^2}\) (d) \(\cfrac{x^2-y^2}{x^2+y^2}\)
27. \(\cfrac{sinθ+cosθ}{sinθ-cosθ} = 5\) āĻšāϞ⧠\(tanθ\) āĻāϰ āĻŽāĻžāύ āύāĻŋāϰā§āĻŖāϝāĻŧ āĻāϰā§āĨ¤
28. \(tanθ= \cfrac{x}{y}\) āĻšāϞ⧠\(\cfrac{x sinθ â y cosθ}{x sinθ+ y cosθ}\) āĻāϰ āĻŽāĻžāύ āύāĻŋāϰā§āĻŖāϝāĻŧ āĻāϰā§āĨ¤
29. \(\cfrac{secθ+tanθ}{secθ-tanθ}=2\cfrac{51}{79}\) āĻšāϞ⧠\(sinθ\) -āĻāϰ āĻŽāĻžāύ āύāĻŋāϰā§āĻŖāϝāĻŧ āĻāϰā§āĨ¤
30. āϝāĻĻāĻŋ \(x=asinθ\) āĻāĻŦāĻ \(y = b tanθ\) āĻšāϝāĻŧ āϤāĻŦā§ āĻĒā§āϰāĻŽāĻžāĻŖ āĻāϰ⧠āϝā§, \(\cfrac{a^2}{x^2} - \cfrac{b^2}{y^2} =1\)