Скачать или смотреть class 10 Trigonometery| Exercise 8.1 solution| Trigonometric ratios| Malayalam.

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class 10 maths
ncert, cbse
Chapter 8:INTRODUCTION TO TRIGONOMETERY
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
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 whether1 tan A1 + tan A = cos2\ A – sin2A 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.