Question

Tolong dong yang pinter matematika... Nomer 7 gimana penyelesaiannya???

Jawab yang bener sama caranya yaa... NO SPAM!!! NO PHP!!!!

Answer 1

Cos C = 6/√61 = sa/mi
de = √(√61² - 6²) = √(61 - 36) = √25 = 5

A + B + C = 180°
A + B = 180° - C
tan (A + B) = tan (180 - C)
= - tan C
= - de/sa
= - 5/6

tan (A + B) = (tan A + tan B)/(1 - tan A.tan B)
-5/6 = (tan A + tan B) / (1 - 4)
-5/6 = (tan A + tan B) / -3
tan A . tan B = -5/6 . -3 = 5/2