Table of contents
- 0. Review of College Algebra(0)
- 1. Measuring Angles(0)
- 2. Trigonometric Functions on Right Triangles(0)
- 3. Unit Circle(0)
- 4. Graphing Trigonometric Functions(0)
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations(0)
- 6. Trigonometric Identities and More Equations(0)
- 7. Non-Right Triangles(0)
- 8. Vectors(0)
- 9. Polar Equations(0)
- 10. Parametric Equations(0)
- 11. Graphing Complex Numbers(0)
6. Trigonometric Identities and More Equations
Sum and Difference Identities
6. Trigonometric Identities and More Equations
Sum and Difference Identities: Study with Video Lessons, Practice Problems & Examples
Back to all problems
11PRACTICE PROBLEM
Determine the exact value of tan (A + B) using the following information:
sin A = 13/85, A is in quadrant II
sin B = 16/65, B is in quadrant I
a) 11/220
b) -220/221
c) -21/221
d) 21/220
Determine the exact value of tan (A + B) using the following information:
sin A = 13/85, A is in quadrant II
sin B = 16/65, B is in quadrant I
a) 11/220
b) -220/221
c) -21/221
d) 21/220