2 years ago

What is the exact value of cos(11pi/21)cos(pi/7)-sin(11pi/21)sin(pi/7)?

Mathematics

2 answers:

Anika [276]2 years ago

7 0

Answer:

Step-by-step explanation:

-1/2

arsen [322]2 years ago

7 0

Answer:

B -1/2

Step-by-step explanation:

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X=5y: 2x+5y=60 A) 10,4 B) 15,4 C) 20,4 D) 25,4

elena-14-01-66 [18.8K]

Answer:

C) 20, 4

Step-by-step explanation:

X = 5y

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Question 32 of 40 The ratio opposite hypotenuse describes which function?

Helen [10]

The ratio $\frac{Opposite}{Hypotenuse }$ describes the Sine function . The correct option is C. Sine

<h3>Trigonometry </h3>

From the question, we are to determine the function that the ratio of opposite to hypotenuse describes

By SOH CAH TOA

We have that

$Sine = \frac{Opposite}{Hypotenuse }$

$Cosine = \frac{Adjacent}{Hypotenuse }$

and

$Tangent = \frac{Opposite}{Adjacent}$

Hence, the ratio $\frac{Opposite}{Hypotenuse }$ describes the Sine function . The correct option is C. Sine

Learn more on Trigonometry here: brainly.com/question/956353

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