SOLUTION: Can you check my answer to see if im right or which one i need to correct this the last subject. I need to past to graduate. 1). cot 0 = 1/tan0 is a A. confuction idenity B

Algebra ->  Trigonometry-basics -> SOLUTION: Can you check my answer to see if im right or which one i need to correct this the last subject. I need to past to graduate. 1). cot 0 = 1/tan0 is a A. confuction idenity B      Log On


   

Question 248226: Can you check my answer to see if im right or which one i need to correct this the last subject. I need to past to graduate.
1). cot 0 = 1/tan0 is a
A. confuction idenity
B. reciprocal idenity
C. inverse idenity
2). cos^-1 0.5 =
A. 1/cos 0
B. cos(90-0)
C. 60
3). sin 20 =
A. 2sin 0 cos 0
B. cos^2 0 - sin^2 0
C. 1- cos^2 0
4). cos 20 =
A. 1 - 2sin^2 0
B. 1- 2cos^2 0
C. cos 0 - sin 0
I got for numbers
1. B
2. c
3. A
4. A
Is im correct or which one do i have to go back and do
Found 2 solutions by richwmiller, stanbon:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Your English is terrible.
You need to "past"?
"Is im" correct?
inverse "idenity"
"confuction idenity"
Yes, go back and learn English grammar and spelling.
Remember, you are asking help mostly from teachers!

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Can you check my answer to see if im right or which one i need to correct this the last subject. I need to past to graduate.
1). cot 0 = 1/tan0 is a
A. confuction idenity
B. reciprocal idenity
C. inverse idenity
Ans: B
------------------------
2). cos^-1 0.5 =
A. 1/cos 0
B. cos(90-0)
C. 60
Ans: C
-----------------------
3). sin 20 =
A. 2sin 0 cos 0
B. cos^2 0 - sin^2 0
C. 1- cos^2 0
Ans: A
-----------------------
4). cos 20 =
A. 1 - 2sin^2 0
B. 1- 2cos^2 0
C. cos 0 - sin 0
Ans: A
----------------------
I got for numbers
1. B
2. c
3. A
4. A
Is im correct or which one do i have to go back and do
--------------
Your answers seem correct to me.
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Cheers,
Stan H.