Class-10 Math Chapter-8 Balaji Exercise 8.1 त्रिकोणमिति का उपयोग & Q.N.1 to 5 Trigonometry

Created by InShot:https://inshotapp.page.link/YTShare त्रिकोणमिति आसान तरीके से हल करें Class-10 Math Chapter-8 Balaji Exercise 8.1 त्रिकोणमिति का उपयोग & Q.N.1 to 5 Trigonometry class 10 math Math solution Balaji chapter 8 exercise 8.1 introduction of trigonometry sin cos tan cot sec cosec basic question number 1,2,3,4 REET exam SSC exam All compitition Exams Math EXERCISE 8.1 1. In  ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine : (i) sin A, cos A (ii) sin C, cos C 1.  ABC में, B पर समकोण है, AB = 24 सेमी, BC = 7 सेमी। ठानना : (i) पाप ए, क्योंकि ए (ii) पाप सी, क्योंकि सी 2. In Fig. 8.13, find tan P – cot R. 3. If sin A =3 /4 calculate cos A and tan A. 4. Given 15 cot A = 8, find sin A and sec A. 5. Given sec  = 13 , 12 calculate all other trigonometric ratios. 6. If  A and  B are acute angles such that cos A = cos B, then show that  A =  B. 7. If cot  = 7 , 8 evaluate : (i) (1 sin )(1 sin ) , (1 cos )(1 cos )       (ii) cot2  8. If 3 cot A = 4, check whether 2 2 1 tan A 1 + tan A  = cos2 A – sin2 A or not. 9. In triangle ABC, right-angled at B, if tan A = 1 , 3 find the value of: (i) sin A cos C + cos A sin C (ii) cos A cos C – sin A sin C 10. In  PQR, right-angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of sin P, cos P and tan P. 11. State whether the following are true or false. Justify your answer. (i) The value of tan A is always less than 1. (ii) sec A = 12 5 for some value of angle A. (iii) cos A is the abbreviation used for the cosecant of angle A. (iv) cot A is the product of cot and A. (v) sin  = 4 3 for some angle . #viral #mathsolution #maths #coordinategeometry #distance #chapter8 math #mathstricks #class10 #reet2023 #math #ncert #cbse #rbse