What is the exact value of cos 45° ?
2 answers:
Answer:
sqrt{2}/2
Step-by-step explanation:
Let the two sides of a right triangle be equal to one, which means that the hypotenuse is √2
Since cosa=adjacent side / hypotenuse
cos45=1/√2
We can rationalize the denominator by multiplying numerator and denominator by √2
√(2)/2
or if you prefer: √(1/2)
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Answer:
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Answer:
<h3>FOR THIS PROBLEM I GOT..... (20/r)-(20/s)</h3>
Step-by-step explanation:
pls brainlest mee
First we'll substitute 
with 
Then we can separate this.
Then we'll solve this.
Then we'll plug in to find the extraneous solutions (if any)
x/5 = 6/15
15x = 30
x = 2
answer
x = 2 ft
y/10 = 6/15
15y = 60
y = 4
answer
y = 4 ft
Answer:
1/10 + 1/2 = 1/10 + <em><u>5/10</u></em> = <em><u>6/10</u></em>
