<h3>
Answer: B) Only the first equation is an identity</h3>
========================
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
---------------------------------
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:
Rational
Step-by-step explanation:
okay so a natural number is anything like 1,2,3,4...etc.
a whole number is like a natural number but includes 0's
an integer is numbers that can have both positive and negative numbers
but keep in mind all of these are whole numbers or can be made into a whole number (not including natural numbers)
this leaves...
Rational
now here is a word of advice every mixed number and fraction is rational because its already in a solved and complete form but a decimal that could be solved like 0.77777 or 0.345 with a line over it or 64 squared
Irrational
a number that has no end and cant be solved like 0.86866968..... or 38 squared
Answer:
i think its d
Step-by-step explanation:
cause i solved it and got the same answer
Answer:The answer is 77.
Step-by-step explanation:
But it's not in the options.
If the question is 62-15=47
The answer is 1/3. since there are 2 marbles out of 6 that are blue, there is a 2/6 chance of a random marble picked being blue. However, 2/6 simplified is 1/3