stressedstudent101
02.08.2019 •
Mathematics
What is the value of tan (-2pi/3)? the correct answer is sqrt 3 but how do i get that? someone explain
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Ответ:
Step-by-step explanation:
First of all let's define the tangent function:
Now, let's define the standard angles, standard angles are those that have values that appear very often in everyday life. These angles are 30°=π/6, 45°=π/4, and 60°=π/3, and the angles 0°, 90°=π/2, 120°= 2π/3, 180°=π, 270°=3π/2, and 360°=2π. The latter, although not defined as 'standard', are also very common. Here are the values:
Also you need to keep in mind that cosine function is an even function, and sine function is an odd function, that is:
Using these definitions you are able to solve the problem:
Ответ:
D. Virginia
Explanation: