datkiidchris datkiidchris

29-05-2020
Mathematics

contestada

If cos A = 12/13 , and ∠A is in the fourth quadrant, find the exact value of sin2A.

Respuesta :

facundo3141592 facundo3141592

03-06-2020

Answer: 0.71

Step-by-step explanation:

we have that cos(A) = 12/13

then:

A = Acos(12/13) = 22.62°

But A is in the fourth quadrant, so A is actually 22.62° + 180° = 202.62°

Then Sin(2A) = sin(2*202.62°) = 0.71

Answer Link

Otras preguntas

what is to find an approximate value for a number is called?

What is diffusion? (From early china)

Which equation does not represent a linear function of x ?

How did Qin Shi Huangdi create the first unified Chinese empire? A. He won the loyalty and respect of his people. B. He promoted Confucianism. C. He crushed all

A mouse eats 100 times his own weight in grain in a lifetime. You can see that plants must produce a great amount of food for just one mouse. What do you think

The United States can be characterized in all of the following ways: presidential government, republic, representative democracy, federal government.

what was a major pull factor that brought immigrants to the untied states between 1830 and 1850

In the human body, fibrinogen is necessary for sealing cuts and stopping the loss of blood. Since fibrinogen is made of chains of amino acids, it is an example

What is a a court that can reverse the decision of a U.S. District Court?

What tool was used to do measure the depths of the ocean? •What are the 2 pieces of equipment used to collect bottom samples on the Challenger? •What was a newl