What is the domain of y = cos θ
2 answers:
Answer:
The domain is all real numbers or
Step-by-step explanation:
The definition of domain is :
Domain is the set of x values for which the function is defined.
The given function is y = cos θ and we know that θ can take any value. In other words, for any value of θ, the function y = cos θ is defined.
Therefore, we can conclude that the domain of y = cos θ is the set of all real values.
In interval notation we can write it as
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Answer:
<em>120 degrees</em>
Step-by-step explanation:
Find the diagram attached.
From the diagram;
Interior angles are m∠BCA and m∠ABC
Exterior angle is m∠DAB
The sum of interior angle of the triangle is equal to exterior
m∠BCA +m∠ABC =m∠DAB
Given
m∠ABC = 70
m∠BCA =50
m∠DAB = 70 + 50
m∠DAB = 120 degrees
<em>Hence the measure of m∠DAB is 120 degrees</em>
