Answer:
The two angles are 39°
Step-by-step explanation:
180 - 102 = 78. 78/2 = 39.
Answer:
C. (2,-3) is a solution to the system of linear equations
Step-by-step explanation:
3x - y = 9
4x + y = 5
---------------add
7x = 14
x = 14/7
x = 2
3x - y = 9
3(2) - y = 9
6 - y = 9
-y = 9 - 6
-y = 3
y = -3
The answer is y= -11x + 13
Answer:
A
Step-by-step explanation:
given sin x ≈ 0.2588, then
x = (0.2588) ≈ 15°
using the cofunction identity
cos x = sin(90 - x)
the complement of 15° is 90° - 15° = 75°, hence
cos 75° = sin(90 - 75)° = sin15° ≈ 0.2588