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3 years ago

Can anybody check and see if 11 and 12 are correct. I will Give Brainliest Answer.

Mathematics

1 answer:

alexgriva [62]3 years ago

6 0

Answer:

These are correct! Nice Job!!

Step-by-step explanation:

You might be interested in

zubka84 [21]

Answer:

See Explanation Below

Step-by-step explanation:

Given

$(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx.cos x.$

Required

Prove

To start with; we open the bracket on the left hand side

$(sin x - cos x)^2 = (sin x - cos x)(sin x - cos x)$

$(sin x - cos x)^2 = (sin x )(sin x - cos x)- (cos x)(sin x - cos x)$

$(sin x - cos x)^2 = sin^2 x -sinx cos x - sin xcos x + cos^2 x$

$(sin x - cos x)^2 = sin^2 x -2sinx cos x + cos^2 x$

Reorder

$(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x$

From trigonometry;

$sin^2x + cos^2x = 1$

So;

$(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x$

becomes

$(sin x - cos x)^2 = 1 - 2sinx cos x$

Also from trigonometry;

$sec^2x - tan^2x = 1$

So,

$(sin x - cos x)^2 = 1 - 2sinx cos x$

becomes

$(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx cos x$

Proved

3 0

3 years ago

Again asap and sorry for the mess…

skelet666 [1.2K]

Answer:

185 shrubs

Step-by-step explanation:

ratio plant : 1% = 5 : 1%

if the percent of shrubs in the garden is 37%, according to my ratio. every 1% is 5 plants, therefore, 37% = 37 x 5 = 185

6 0

2 years ago

5000 people attended a football game. 2350 of the people attending supported the home team, while 2650 supported the visiting te

Otrada [13]

Answer:

47%

2350 out of 5000=0.47

move the decimal 2 times

3 0

3 years ago

The average weight of a mature human brain is approximately 1400 grams. what is the equivalent weight in kilometers? In pounds?

Illusion [34]

635.0293 kilograms

3086.472 pounds

Hope this helps.

7 0

3 years ago

Simplify using appropriate property: 5/7 X 1/5 + 5/7 X 3/5Simplify using appropriate property:

chubhunter [2.5K]

Answer:

4/7

Step-by-step explanation:

5/7 x (1/5+3/5) = 5/7 x 4/5 = 4/7

8 0

3 years ago