15840 degrees
Hope this helps!
Answer:
angle 1
Step-by-step explanation:
Using the trigonometric mnemonic SOH CAH TOA, we know that cos or cosine is the ratio between the adjacent side and hypotenuse side.
This means that if cos A = 0.48, A is the measure of the angle which it's relative adjacent side divided by the hypotenuse of the triangle will be around 0.48.
Let's try angle 2, cos (angle 2) = adjacent / hypotenuse = 7.8 / 8.9 = 0.876404494382 ≈ 0.87 ≠ 0.48. Since the proportions are not equal, this angle cannot be the one marked as A.
Since angle 3 is a right angle, the adjacent could be either side so it cannot be correct. Thus angle 1 is correct.
Answer:
1) 1.6 inch
2) 10.05inch
Step-by-step explanation:
radius = diameter/2 = 3.2/2 = 1.6 inch
circumference = 2πr = 2 * 3.14 * 1.6 =10.048=10.05inch
Answer:
-2/3
Step-by-step explanation:
Step 1: Write out expression
1 2/3 - 2 1/3
Step 2: Convert to improper fractions
5/3 - 7/3
Step 3: Subtract
-2/3
11*11 = 121
5*5 = 25
121-25 = 96
square root 96 = 9.79795897113
