All categories

2 years ago

If the angles are represented in degrees, find both angles: sin(x + 7) = cos(4x + 8)

Mathematics

2 answers:

ValentinkaMS [17]2 years ago

7 0

Answer:

x = -1/3

Step-by-step explanation:

We have,

sin(x + 7) = cos(4x + 8)

We need to find the value of x.

We know that,

sin(90-x) = cosx

So,

sin(90-(x + 7)) = cos(4x + 8)

cos(x+7) = cos(4x + 8)

i.e.

(X+7) = (4x+8)

7-8 = 4x-x

-1 = 3x

x = -1/3

docker41 [41]2 years ago

6 0

Answer:

sin(22 ∘ ) = cos(68∘ )

Step-by-step explanation:

Sin(x+7)=cos(4x+8)

(x+7) + (4x+8) = 90

x + 7 + 4x + 8 = 90

5x + 15 = 90

−15 = −15

5x/5 = 75/5

x = 15

Answer: sin(22 ∘ ) = cos(68∘ )

You might be interested in

PLEASE HELP PICTURE IS SHOWN

chubhunter [2.5K]

A because 5*4 = 20 that why its a

6 0

3 years ago

The graph of a function must pass the __________ line test. <br> A) vertical <br> B) horizontal

olga2289 [7]

Answer:

A) Vertical.

Step-by-step explanation:

It must pass the vertical line test. That is it must not have any vertical line passing through more than one point on the curve. If it does then it is not a function.

Thus , for example, a circle graph would not be a function.

5 0

3 years ago

Read 2 more answers

Suppose a three-seat city council election. For each seat, one progressive and one conservative is running, and voters must choo

Kitty [74]

Answer:

The probability that conservative party wins all 3 seats is 0.216

The probability that conservative party wins exactly two seats is 0.432

Step-by-step explanation:

Consider the provided information.

The probability of a conservative candidate winning is p=0.6.

The probability of one progressive candidate will win is: 1-0.6=0.4

Part (a) What is the probability that the conservative party wins all three seats?

According to binomial distribution: $b(x; n, p) =^nC_xp^x(1- p)^{n-x}$

$P(x=3) =^3C_3(0.6)^3 (0.4)^{3-3}$

$P(x=3) =(0.6)^3$

$P(x=3)=0.216$

P(conservative party wins all 3 seats) = 0.216

Hence, the probability that conservative party wins all 3 seats is 0.216

Part (a) What is the probability that the conservative party wins exactly two seats?

$P(x=2) =^3C_2(0.6)^2 (0.4)^{3-2}$

$P(x=2) =3(0.36)(0.4)$

$P(x=2) =0.432$

Hence, the probability that conservative party wins exactly two seats is 0.432

5 0

3 years ago

A man has 14 coins in his pocket, all of which are dimes and quarters. If the total value of his

S_A_V [24]

Answer:

9 quarters 5 dimes!

Step-by-step explanation:

9x0.25=2.25

5x0.10=0.50

2.25+0.50=2.75

6 0

3 years ago

"Out of" is used when you want too divide . True or false ?

Alik [6]

Answer:

I think it's true

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers