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2 years ago

What is the solution to the equation below?

Mathematics

2 answers:

fgiga [73]2 years ago

8 0

Where is the equation

Digiron [165]2 years ago

3 0

Answer:

you didnt put an equation

Step-by-step explanation:

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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

Select Equal or Not Equal to correctly classify each statement.

Black_prince [1.1K]

The first problem is true because with multiplication it doesn't matter which order it is in.

The second problem is false because you will get a different quotient depending on which numbers are on which side of the equation.

3 0

3 years ago

Read 2 more answers

Draw a figure thats less than 1/6

HACTEHA [7]

1 Whole is bigger than a fraction
1 part of the 6 equal groups is shaded

1/3

6 0

3 years ago

Please i need help realy fast or i will fail this semester

katrin2010 [14]

Y=mx+b
m=slope
b=yintercept

given
y=-2x+3 and
y=-4x-1

first equation is slope -2 and yintercept 3
second is slope -4 and yintercept -1

3rd option

8 0

3 years ago

Read 2 more answers

Need help with number 7

tatyana61 [14]

Since she runs 6 $\frac{1}{2}$ miles each day and there 7 days per week, you will have to multiply 6 $\frac{1}{2}$ times 7.

But since you have to use distributive properties, multiply like this (6 $\frac{1}{2}$ )(7)

6 $\frac{1}{2}$ is equal to $\frac{13}{2}$

Now turn 7 into a fraction, so its $\frac{7}{1}$

Now multipy (6 $\frac{1}{2}$ )( $\frac{7}{1}$ )

Multiply the numerators, so its 7 * 13 which gives you 91 and multiply the denominators so its 1 * 2 which gives you 2.

Put that back into a fraction as $\frac{91}{2}$

Divde it to change it to a mixed number and the answer is 45 $\frac{1}{2}$

8 0

3 years ago