A ) cos² x · 1 / sin x - 1 / sin x = - sin x
cos² x - 1 / sin x = - sin x
- sin² x / sin x = - sin x
- sin x = - sin x ( correct )
B ) sin x ( cos x / sin x + sin x / cos x ) = 1 / cos x
sin x · ( cos² x + sin²x ) / sin x cos x = 1 / cos x
sin x · 1 / sin x cos x = 1 / cos x
1 / cos x = 1 / cos x ( correct )
C ) cos² x - sin² x = 1 - 2 sin² x
1 - sin² x - sin² x = 1 - 2 sin² x
1 - 2 sin² x = 1 - 2 sin² x ( correct )
D ) 1/sin²x + 1/ cos²x = 1
cos²x + sin² x / sin² x cos² x = 1
1 / cos² x sin² x = 1
cos²x sin² x ≠ 1
Answer: D ) is not an identity.
Answer:
Step-by-step explanation:
Answer:
To find the perimeter of a quadralateral on a coordinate plane, use the distance formula to find the length of each side, and then add the lengths. By using this method, you can find the perimeter accurately.
Both are 3.
The first one EBF is not equal to ABC because EBF is half of ABC not the entirety of it.
The second one is 3 because is A=B then A to C would be the same as going B to C.
<u>Answer:</u>
h= 1/4; g = 4
<u>Step-by-step explanation:</u>
1. 3/5h - 1/10 = h/5
First multiply by 10 to get rid of the fractions
(10)3/5h - (10)1/10 = (10)h/5
6h - 1 = 2h
Add one to each side
6h = 2h + 1
Subtract 2h from each side
6h - 2h = 1
4h = 1
Divide 4 by each side
h = 1/4
2. 3g - 10/4 = 1/2
Multiply each side by 4 to get rid of fractions
(4)3g - 10/4 = (4)1/2
3g - 10 = 2
Add 10 to each side
3g = 12
Divide each side by 3
g = 4
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