Respuesta :
Answer:
2/3
Step-by-step explanation:
The angles a and b sum to 90°, so they are complementary. A trigonometric identity asserts that cos(90° - a) = sin (a) for any angle a, so cos(b) = sin (a) =
2/ 3 .
Answer:
2/3
Step-by-step explanation:
The angles a and b sum to 90°, so they are complementary. A trigonometric identity asserts that cos(90° - a) = sin (a) for any angle a, so cos(b) = sin (a) =
2/ 3 .
