<h3>
Answer: B) Only the first equation is an identity</h3>
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I'm using x in place of theta. For each equation, I'm only altering the left hand side.
Part 1
cos(270+x) = sin(x)
cos(270)cos(x) - sin(270)sin(x) = sin(x)
0*cos(x) - (-1)*sin(x) = sin(x)
0 + sin(x) = sin(x)
sin(x) = sin(x) ... equation is true
Identity is confirmed
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Part 2
sin(270+x) = -sin(x)
sin(270)cos(x) + cos(270)sin(x) = -sin(x)
-1*cos(x) + 0*sin(x) = -sin(x)
-cos(x) = -sin(x)
We don't have an identity. If the right hand side was -cos(x), instead of -sin(x), then we would have an identity.
Answer:
40 dimes and 21 pennies.
Step-by-step explanation: 40 dimes equal 4.00 so just add 21 pennies
Answer:
(-2,-5) (0,-1)
(-1+5)/(0+2)= 4/2= 2
y + 5 = 2(x + 2)
y + 5 = 2x + 4
y = 2x - 1
Step-by-step explanation:
It would have to be 15 and 8
Distribute the ( ).....get -6y -10= -4
Add 10 on both sides, get -6y=6. Divide by-6, get y of -1
