First way
arcsin(1/4) means that 1/4 sin of the angle.
sin(α)=1/4
sin²α+cos²α=1
(1/4)²+cos²α=1
cos²α=1-1/16 =15/16
cosα=+/-(√15)/4
<span>Second way
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sin(α)=1/4 =opposite leg/hipotenuse
cos(α)=adjacent leg/hypothenuse
adjacent leg =√(hypotenuse²- Opposite²)=√(16-1)=√15
cosα=+/-√15/4
For one value of sinα, possible 2 values of cosα.
128 times 2 is 256 divided by 2 is 128 scoops of ice cream
Let q = quarters
Let d = dimes
q + d = 13
0.25q + 0.10d = 2.75
You have two equations and two unknowns.
Take it from here.
Answer:
Step-by-step explanation:
Use the laws of exponents and simplify 
to a^(8-6) to a^2
An angle of 200 degrees in an obtuse angle.
