Answer:
9.5
Step-by-step explanation:
I'm not sure but I think 9.5 x 6 is 57 degrees so I'm guessing its 9 1/2 or 9.5
Answer:
Step-by-step explanation:
Q1
Q2
- b) sin = opposite/hypotenuse
Q3
- Cos A = 0.1908
- A = arccos 0.1908
- A = 79° ⇒ Option c)
Q4
- tan A = 16/19
- A = arctan 16/19
- A = 40° ⇒ Option b)
Answer:
∠ CDB = 45°
Step-by-step explanation:
The measure of an inscribed angle is half the measure of its intercepted arc.
∠ CDB = 0.5 × BC = 0.5 × 90° = 45°
Answer:
Below.
Step-by-step explanation:
a. Φ^2 − Φ − 1 = 0
Φ2 − Φ = 1
(Φ - 0.5)^2 - 0.25 = 1
(Φ - 0.5)^2 = 1.25
Φ - 0.5 = √(1.25) (We only take the positive root).
Φ = 0.5 + √(1.25)
b. I used Completing the square.
c. Φ is irrational That is it cannot be represented as a fraction a/b and because of this it can only be approximated by a decimal.
