Answer:
Step-by-step explanation:
<u>Here is how I found it:</u>
- Flip the picture 180°.
- Then, measure the angle.
<em>Required:</em>
- The angle is 90°.
- If you don't pay attention, you might mistake it for a 150° angle.
Correct choice is A.
Answer:
a square
Step-by-step explanation:
sorry if wrong
Answer:
t = 3 arc cos(h/7)/π
Step-by-step explanation:
The equation h=7cos(pi/3 t) models the (h) height in centimeters after (t) seconds of a weight attached to the end of a spring that has been stretched and released. To solve the equation for t we will solve the equation step by step:
h=7cos(pi/3 t)
Step 1)
Divide both sides by 7
h/7 = 7cos(pi/3 t)/7
Now the equation becomes h/7=cos(pi/3 t)
Step 2)
h/7=cos(pi/3 t)
Now apply inverse cosine function:
arc cos (h/7) = pi/3 t
Step 3)
t = 3 arc cos(h/7)/pi
Thus t = 3 arc cos(h/7)/pi ....
