At IDNLearn.com, find answers to your most pressing questions from experts and enthusiasts alike. Discover detailed and accurate answers to your questions from our knowledgeable and dedicated community members.

ΔABC has three sides with these lengths: AB = 9, BC = 40, and CA = 41. What is the value of cos C?

Sagot :

Answer:

m ∠ C = 12.68°

Step-by-step explanation:

CA = 41 is the hypotenuse of the right triangle.

 BC = 40 is adjacent to angle C.

Cos C = adjacent/hypotenuse

Cos ∠C =  40/41

[tex]cos^{-1}[/tex](40/41) = 12.68°

Check

cos (12.68) = x/41

)cos 12.68) x 41 = 40 check