Math Problem Statement
Find the values of the trigonometric functions of 𝜃 from the information given. tan(𝜃) = −3, sin(𝜃) > 0
Solution
Given the information:
Step 1: Determine the quadrant
- Since , the tangent is negative.
- Since , the sine is positive.
Tangent is negative and sine is positive in Quadrant II.
Step 2: Use
- implies .
In Quadrant II, sine is positive and cosine is negative. Let’s assume: Substitute into the tangent formula: This satisfies the equation, so the sine and cosine values are proportional to 3 and -1.
Step 3: Calculate and
To find the exact values, we use the identity: Substitute and into the equation:
Step 4: Final values of and
Step 5: Calculate the remaining trigonometric functions
- (given)
Final answers:
Would you like more details or further clarifications?
Related questions:
- How do you determine the quadrant based on sine and tangent signs?
- Can you explain the identity further?
- How is calculated from ?
- How do inverse trigonometric functions relate to this problem?
- What are the possible ranges for trigonometric functions in different quadrants?
Tip:
Always use the Pythagorean identity to verify trigonometric values.
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Quadrants
Trigonometric Functions
Formulas
tan(𝜃) = sin(𝜃) / cos(𝜃)
sin^2(𝜃) + cos^2(𝜃) = 1
Reciprocal identities: sec(𝜃) = 1/cos(𝜃), csc(𝜃) = 1/sin(𝜃), cot(𝜃) = 1/tan(𝜃)
Theorems
Pythagorean Identity
Suitable Grade Level
Grades 10-12
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