Answer:
√2(√3 - 1)/4
Step-by-step explanation:
To find an exact value for Cos75°, we use the compound angle formula. Since 75° = 45° + 30°, Cos75° = Cos(45° + 30°).
Using Cos(A + B) = CosACosB - SinASinB where A = 45° and B = 30°,
Cos75° = Cos(45° + 30°) = Cos45°Cos30° - Sin45°Sin30°
Now Cos45° = Sin45° = 1/√2 = √2/2, Cos30° = √3/2 and Sin30° = 1/2.
Substituting these values into the above equation, we have
Cos75° = Cos(45° + 30°)
= Cos45°Cos30° - Sin45°Sin30°
= √2/2 × √3/2 - √2/2 × 1/2
= √6/4 -√2/4
= √2(√3 - 1)/4
What word? Be more specific please
The answer is 30.You get th is by multiplying 4 by 3 first than the answer by 2.5.Which gives your final answer 30.
Answer: The angle of depression is 51.34°.
Step-by-step explanation:
1. You can make the diagram shown in the figure attached. Where 
is the point where the clue is and 
is the point where Tyler is.
2. To calculate the angle of depression, which is identified in the diagram as 
, you can use 
, as following:
3. Then, you obtain the following angle of depression from the clue to the point where Tyler is:
°
Answer:
Eggs: 25 cents ea.
Pounds of peanuts: $2.50 ea.
Rolls of toilet paper: 50 cents ea.
Apples: 35 cents ea.
Step-by-step explanation:
This is assuming you meant $3 for 12 eggs, and $2 for 4 rolls of toilet paper.
For the eggs, I did 3 / 12 = .25 (aka 25 cents);
For the peanuts: 7.50 / 3 = $2.50;
For the toilet paper: 2 / 4 = .50 (aka 50 cents);
For the apples: 3.50 / 10 = .35 (aka 35 cents).
Hope this helped ~
:D
