Answer: see proof below
<u>Step-by-step explanation:</u>
Use the following Half-Angle Identities:
sin² A = (1 - cos 2A)/2
cos² A = (1 + cos 2A)/2
<u>Proof LHS → RHS:</u>
LHS: sin⁴ A
Expand: sin² A · sin² A
LHS = RHS
Answer:
11
Step-by-step explanation:
you need to divide 89 by 8 then round and you get 11
The cruising speed of the airplane is equal to 200 m/s.
<u>Given the following data:</u>
- Time =
To calculate the cruising speed of the airplane:
<h3>What is speed?</h3>
Speed can be defined as the distance covered by a physical object per unit of time. Thus, speed can be measured as meter per seconds.
Mathematically, speed is given by this formula;
<u>Conversion:</u>
Distance = 1 kilometer = 1000 meter
Time =
Substituting the given parameters into the formula, we have;
Speed = 200 m/s.
Read more on speed here: brainly.com/question/10545161
Answer:
1. x
=
5
2
−
5
y
4
x=5/2-5y/4
2. x
=
15
4
−
5
y
8
x=15/4-5y/8
Step-by-step explanation:
Answer:25179=&162
Step-by-step explanation:
Hope this helps xd