Question

EXERCISE 21(D)
1. Use tables to find sine of:
(i) 21°
(ii) 34° 42
(iv) 62° 57'
(i) 2° 4'
(ii) 47° 32'
(v) 10° 20' + 20° 45'
2. Use tables to find cosine of :
(ii) 8° 12'
(iii) 26° 32
(iv) 65° 41'
(v) 9° 23' + 15° 54'
3. Use trigonometrical tables to find tangent of:
(i) 37°
(ii) 42° 18'
(iii) 17° 27'
4. Use tables to find the acute angle o, if the value
of sin is:
(i) 0.4848
(ii) 0-3827
(iii) 0-6525
5. Use tables to find the acute angle o, if the value
of cos O is :
(i) 0.9848
(ii) 0.9574
(iii) 0.6885
6. Use tables to find the acute angle 8, if the value
of tan is :
(i) 0.2419
(ii) 0-4741
(iii) 0.7391​

Answer 1

Step-by-step explanation:

EXERCISE 21(D)

1. Use tables to find sine of:

(i) 21°

(ii) 34° 42

(iv) 62° 57'

(i) 2° 4'

(ii) 47° 32'

(v) 10° 20' + 20° 45'

2. Use tables to find cosine of :

(ii) 8° 12'

(iii) 26° 32

(iv) 65° 41'

(v) 9° 23' + 15° 54'

3. Use trigonometrical tables to find tangent of:

(i) 37°

(ii) 42° 18'

(iii) 17° 27'

4. Use tables to find the acute angle o, if the value

of sin is:

(i) 0.4848

(ii) 0-3827

(iii) 0-6525

5. Use tables to find the acute angle o, if the value

of cos O is :

(i) 0.9848

(ii) 0.9574

(iii) 0.6885

6. Use tables to find the acute angle 8, if the value

of tan is :

(i) 0.2419

(ii) 0-4741

(iii) 0.7391