Answer:
A =
Step-by-step explanation:
Given that Cos A =
cos A =
A =
A =
Answer:
Step-by-step explanation:
a) Input = -9 ⇒ x = -9
y = x² + 3
Plugin x = (-9),
y = (-9)² + 3
= 81 + 3 {(-9)² = -9 * (-9) = 81}
y = 84 ---> Output
y = √x - 2
= √-9 - 2 { i² = -1}
y = 3i - 2 ------> Output
b) Output = 0
y = x² + 3
x² + 3 = 0
x² = -3
y = √x -2
0 = √x - 2
√x = 2
Take square,
4y + x = -12
4y +x (-x) = -12 (-x)
4y/4 = (-12 - x)/4
y = -3 - (x/4)
hope this helps
Answer:
-21/4 + 3s/4
Step-by-step explanation: