Math Problem Statement

اگر tanα=4\tan\alpha=4 و cosα<0\cos\alpha<0 باشد،در این صورت α\alpha در کدام ناحیه دایره مثلثاتی قرار دارد؟

Solution

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Unit Circle

Formulas

Definitions of trigonometric functions

Theorems

Properties of trigonometric functions in different quadrants

Suitable Grade Level

High school