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3 years ago

Help needed ASAP will give BRAINLIEST AND 5 STARS RATE

Mathematics

1 answer:

Leona [35]3 years ago

7 0

Answer:

Step-by-step explanation:

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HELPPPP

deff fn [24]

I think that the best answer is A

4 0

3 years ago

Please someone help me to prove this.

dem82 [27]

<h3>Answer :</h3>

We know that,

$\dag\bf\:sin^2A=\dfrac{1-cos2A}{2}$

$\dag\bf\:sin2A=2sinA\:cosA$

___________________________________

Now, Let's solve !

$\leadsto\:\bf\dfrac{sin^2A-sin^2B}{sinA\:cosA-sinB\:cosB}$

$\leadsto\:\sf\dfrac{\frac{1-cos2A}{2}-\frac{1-cos2B}{2}}{\frac{2sinA\:cosA}{2}-\frac{2sinB\:cosB}{2}}$

$\leadsto\:\sf\dfrac{1-cos2A-1+cos2B}{sin2A-sin2B}$

$\leadsto\:\sf\dfrac{2sin\frac{2A+2B}{2}\:sin\frac{2A-2B}{2}}{2sin\frac{2A-2B}{2}\:cos\frac{2A+2B}{2}}$

$\leadsto\:\sf\dfrac{sin(A+B)}{cos(A+B)}$

$\leadsto\:\bf{tan(A+B)}$

5 0

3 years ago

Read 2 more answers

What is the distance between (-5,-6) and (-3,-8)

Sergio [31]

Answer:

x:-2

y:2

Step-by-step explanation:

3 0

3 years ago

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Your computer monitor has a width of 14.86 inches and a height of 11.15 inches. what is the area of the monitor display in squar

Mumz [18]

Assuming a rectangular monitor

the area of a rectangle is
A=B*H
B-base
H- Height

multiply 14.86 by 11.15
sorry, then make a unit conversion into m^2

5 0

4 years ago

Read 2 more answers

What is the value of x?

LiRa [457]

Answer:

x=8

Step-by-step explanation:

this is an equilateral triangle, which means all sides are equal

if all the sides are equal, all the angles are equal

the three angles are all equal to 60 degrees (180/3 = 60)

7x+4 = 60

subtract 4 from each side

7x = 56

divide by 7 on each side

x = 8

8 0

3 years ago

Read 2 more answers