1. What is the value of x?

Mathematics

1 answer:

Gwar [14]3 years ago

8 0

Part 1)
<span>sin(x+22)°=cos(2x−7)°

we know that
</span>

the sine and cosine are co-functions

sin (theta) = cos (90 - theta)------> This implies that the angles sum to 90°

therefore

( x + 22) + (2x - 7) = 90 simplify

3x + 15 = 90 subtract 15 from both sides

3x = 75 divide both sides by 3

x = 25

The answer Part 1) is x=25°

Part 2) Given cos x=12/13 and sin x =5/13

What is ratio for tanx ?

we know that

tan x = sinx / cos x

tan x = (5/13) / (12/13) = (5/13) * (13/12) = <span>5/12</span>

the answer Part 2) is 5/12

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LuckyWell [14K]

Answer:

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Step-by-step explanation:

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babymother [125]

Answer:

Explained below.

Step-by-step explanation:

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And the standard deviation of the sampling distribution of sample means is given by,

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