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2 years ago

given a is equal to 60 degree and 30 degree prove that sin a + b is equal to sin a cos b + cos a sin b

Mathematics

1 answer:

Feliz [49]2 years ago

8 0

Answer:

A = 60 and B = 30

Now, A + B = 60 + 30 = 90

Also, A – B = 60 – 30 = 30

sin (A + B) = sin 90 = 1

sin A cos B + cos A sin B = sin 60 cos 30 + cos 60 sin 30

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Which equation relates the number of triangles in the figure (n) to the perimeter of the figure (p)

WITCHER [35]

Answer:

Option d is correct.

Equation : P=7n+20.

Explanation;

Given the perimeter of each figure is;

Perimeter of triangle is equal to the sum of all the sides of a triangle.

Perimeter of 1 triangle is 21

Perimeter of 2 triangle is 34 and

Perimeter of 3 triangle is 41

Let n be the number of figure and P be the perimeter of the figure;

the only equation which satisfy the given perimeter is;

$P=7n+20$

Check:

for n =1 which means 1 triangle then;

$P =7n+20 = 7 \cdot 1 +20 = 7+20 = 27$

for n = 2 , [ i.e 2 triangle]

$P =7n+20 = 7 \cdot 2 +20 = 14+20 = 34$

and for n =3 [i.e, 3 triangles]

$P =7n+20 = 7 \cdot 3 +20 = 21+20 = 41$

Therefore, the equation P =7n+20 relates the number of triangles in the figure(n) to the perimeter of the figure(P).

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2 years ago

Y intercept of y=2x-3

3241004551 [841]

Since the equation is in y = mx+b form you can easily determine the y intercept based on the b value present.

Y = mx + b
Y = 2x - 3
B = y intercept = (0,-3).

7 0

2 years ago

What is an equation of the line that passes through the points (-6, 3) and (-6, -3)?

Harlamova29_29 [7]

9514 1404 393

Answer:

x = -6

Step-by-step explanation:

A plot of the points tells you one is above the other on the same vertical line. The equation for a vertical line is ...

x = constant

In order for the line to go through points that have x-coordinates of -6, the constant must be -6. The equation of the line is ...

x = -6

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2 years ago

6. What impact does the 5 have in the following equation. y = 5(x+2)^2 +

yulyashka [42]

Answer:

B. It makes the graph really narrow.

Step-by-step explanation:

$\displaystyle Y = A[X - H]^2 + K$

In the Vertex Formula, any fraction you store in for A will result in a vertical shrink, widening the graph, whereas any whole number you store in for A will result in a vertical stretch, narrowing the graph.

I am joyous to assist you at any time.

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2 years ago

Nadir saves $1 the first day of a month, $2 the second day, $4 the third day, and so on. He continues to double his savings each

Leto [7]

The answer is $16,384. If this helps you please make it brainliest as it helps me out.

128

256

512

1024

2048

4096

8,192

16,384

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3 years ago

given a is equal to 60 degree and 30 degree prove that sin a + b is equal to sin a cos b + cos a sin b ​

given a is equal to 60 degree and 30 degree prove that sin a + b is equal to sin a cos b + cos a sin b