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3 years ago

Will give brainlist pleas help !(:

Mathematics

1 answer:

vovikov84 [41]3 years ago

3 0

The Middle Ages is the period of European history from the fall of the Romain Empire to the fall of Constantinople
From 1100 to 1453
Hope this helps I tried

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The Unit Circle

Makovka662 [10]

Answer:

B. (0.87, 0.48)

Step-by-step explanation:

I calculated it logically

8 0

3 years ago

7. Making spaghetti for a crowd, it takes Margarita 2 cups of sauce for

bogdanovich [222]

Answer: 60 cups

Explanation:

3 0

3 years ago

Please help mehhh Thank you! :)

vivado [14]

Parentheses first -4+-8= -12(1)= -12
= -12

4 0

3 years ago

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

Write the Function in function notation.<br><br> y=4b+5

RoseWind [281]

Answer: (b)=4b+5

hope this helped!! :)

8 0

3 years ago