Question

Tugas mtk wajib kls 10
jawab pake cara, no 14-19

jawaban asal tanpa cara dihapus

Answer 1

Penjelasan dengan langkah-langkah:

14] sin a = 1/√10 → y/r

x = √(r² - y²)

x = √(√10² - 1²)

x = √(10 - 1)

x = √9

x = 3

tan a = y/x

tan a = 1/3

15] BC/sin A = AB/sin C

(6 √2)/sin 45° = 6/sin C

sin C = (1/2 √2 . 6)/(6 √2)

sin C = 1/2

Sudut C = 30°

Sudut B

= 180° - 30° - 45°

= 105°

16] sin 45° . cos 45° . cos 60° + cos 90°

= 1/√2 . 1/√2 . 1/2 + 0

= 1/2 . 1/2

= 1/4

17] cos 1.230°

= cos (3 . 360° + 150°)

= cos 150°

= -1/2 √3

18] 1/5 . π rad

= 1/5 . π . 180°/π

= 180°/5

= 36°

19] 45,55°

= 45° + 0,55°

= 45° + 0,55 . 60'

= 45° + 33'

= 45° 33'

Answer 2

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