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Nonamiya [84]
3 years ago
11

Verify that (sinx- cos x)2 = 1 - 2 sin x cos x is an identity.

Mathematics
1 answer:
kicyunya [14]3 years ago
4 0

Answer:

LHS = RHS

Step-by-step explanation:

{( \sin(x) -  \cos(x) ) }^{2}   \\  =  { \sin(x) }^{2}  +  { \cos(x) }^{2}  - 2 \sin(  x)  \cos(x)  \\ = 1 -  \sin(x )\cos(x)

Since,

{ \sin(x) }^{2} +   { \cos(x) }^{2}  = 1

THEREFORE LHS = RHS

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maks197457 [2]
D. 1.0002

Probabilities can only go up to 100%, or 1. 1.0002 is greater than 1.
5 0
3 years ago
Use the distributive property to evaluate the expression.
JulijaS [17]

Answer:

208 or 26(8)

Step-by-step explanation:

8*26=208

26*8=208

6 0
3 years ago
The diameter of the moon is about 3500 km. Approximate the surface area of the moon using the formula for the surface area of a
Contact [7]

Answer:

3.8465 *10^7 square kilometers

Step-by-step explanation:

The surface area of a sphere can be found using the formula SA=4\pi r^2. Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

SA=4\pi r^2\\SA = 4 \pi (1750)^2\\SA = 4 \pi *3,062,500\\SA =38,465,000

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. 3.8465 *10^7

4 0
3 years ago
What is 560 miles in 10hours ?
Gala2k [10]

A good way to think about this is take the phrase "miles in hours" from the question. You are given "560 miles in 10 hours" and what you need to figure out is "X miles in 1 hours." To go from 10 hours to 1 hour, you divide by 10. So you also want to divide miles by 10 to keep everything consistent. 560/10 = 56 miles.

<h3>The answer is 56 miles.</h3>
7 0
2 years ago
The equation sin(40o) =b/20 can be used to determine the length of line segment AC. What is the length of AC? Round to the neare
boyakko [2]
For this case we have the following equation:
 sin (40o) = b / 20
 Clearing b we have:
 20 * sin (40o) = b
 Therefore, the length of the AC segment is given by:
 b = 12.9
 Answer:
 
the length of AC is:
 
b = 12.9
7 0
3 years ago
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