CBSE Grade 10 Ch 8 Introduction to Trigonometry Previous 20 Years Board Exam Very Short Answer Questions

CBSE Grade 10 Ch 8 Introduction to Trigonometry Previous 20 Years Board Exam Very Short Answer Questions

• 1.
  Go(Tntroduehon To Trigonometry PAQE NO.: DATE: PeviauR0 YaQT Exom Quntians Vots Shacl Awarer uenhiae DTE Os A =Ahenhind the Nalue tonA. 20Gven that Alnd z 2 ond cosb O then ahati he Naue 3)TA AABC in m¡ht angled at e,than find the Nale a AeAt6) A TE DABC in ight angled at e, then ftnd 6 TA AnA aa thon hat then Value oP eot A 8)llTA in & thin tthe value tan9in 10)T cos(K+p)=Q, then hind sin lsap)n titra
• 2.
  LA)The value oft t a n 14)Psosethat 16)TA an ( A t 6)=N3andtan (AB) , The Nalue a angle, thn rhat i t h e vaie of ate 5T bec 5A cosee A+ 30rQ BA an DATE : // PAOE NO. 1 30 14)Tn he adnnngkwra, rhata Dt cos 9aa sind and d (90 then sothat t h e le
• 3.
  PAGE NO.: 4+tanAkecA)XA.Atan AtaeeA) thanro that g?y?25. DATE : 20TAtanA =cot Bthen tind the alue of adahA aa) TA CosA=,ndthe value ot 4t 4tan''A. 4+4 Q3Evauate im6o-atan 45°- cos230 25) Tn a AABe ote costnterm of LA. 29) Poe that 4 4 cot A6) TE Ac&in = O theh tind the value 23) TA tan aA cot (A t6oind the vaue of A heTe 2A in an acte nge Cosee pa T tan (Ba t30 Athen tind tte vae of
• 4.
  30) hathabeno towalue of casO sthn A+B. 3) TAA andB are acute angles and then hnd the 34)Pn taat 33) Gnd thae Nauo n 4 4 n 49° PAOE NO.t a0oe hat DATE: / / SinAas1ntonA a cos A cos A 35) Shau that tan9 + on = Aie9-sece 36) T 2 Aino - nd the alus of 40 ose that 4tin9 39) Pae that tancast9 n9. tant 1+tano Atoan9
• 5.
  4DPe hat CoseeC9-4 4Sin9 3cor9 42)T5ton9=3Hhcn hat o the Nalue A£ Evauate: Cosec9 +4 43)lT Atan a3hen tind 4n -Cos9 4sintcosO A4) T 4tan O 3 evalate 4sin0 -cos941 2 45 T 4cos 14inhnd Hhe alue of 3tan'3o+ tan'60+cosa30-tan 45° PAOE N0.! 4R T An(A+B)=4 and si(A -8)= DATE Cot45o 49valuateAm40 4&) Fid core 30 and cos 60 coS 45 OLA+B90 and ABo then ind AandB. Cosee 30 5o)T an (A ae) Btan(A-6) Q<AAB40, hun ind Aand B.
• 6.
  59Paethat tn9 os 9 5zeRR t h e taaonometne otio oA0e A fnd t a n A dan B 4 Tn th znAquIL AOG DATE: PAOE NO. : d tanA n B 56T Ai n shaw hat 3 cos 4 &ee30 55 Evauate Cos Z5 nd tht Nalue afO. 53 nd t h e value ofsin 30cas 60+ COs 90 23 A and B nheie (A+8)and (A8) ace acte anglen.
• 7.
  60 that e4-bee?Q=tanO tan9 63) oe that;A-cos A PAOE HO.: then md th value 65) T! be an acute angle and 5cos 9=T then evaluate sin t cos-1 66The value-od an 65+in5° 6End th valua afsin 33 sinST. 0)Tht aue af he (tan60+ ain45)in £ND