Question

tolong bantuannya kak, jangan ngasal aku butuh cara cari nya!!!​

Answer 1

trigonometri

tan a = y/x = 12/5

tripel pythagoras → x, y, r → 5, 12, 13

sin a = y/r = 12/13

cos a = x/r = 5/13

cos b = x/r = 8/17

tripel pythagoras → x, y, r → 8, 15, 17

sin b = y/r = 15/17

tan b = y/x = 15/8

•

2 sin a tan b

= 2 × 12/13 × 15/8

= 45/13

•

sin a tan b

= 2 sin a tan b /2

= (45/13) / 2

= 45/(13 × 2)

= 45/26