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SUM & DIFFERENCE IDENTITIES
Mr. Velazquez
Honors Precalculus
SUM & DIFFERENCE FORMULAS
SUM & DIFFERENCE FORMULAS
Prove
SUM & DIFFERENCE FORMULAS
SUM & DIFFERENCE FORMULAS
SUM & DIFFERENCE FORMULAS
SUM & DIFFERENCE FORMULAS
SUM & DIFFERENCE FORMULASSuppose that cos 𝜃 = −3/5 for an angle 𝜃 in quadrant II, and cos 𝛽 = 12/13 for an angle 𝛽 in quadrant I. Find the exact value for each of the following:
1. sin 𝜃 =
2. sin 𝛽 =
3. sin 𝜃 + 𝛽 =
4. cos 𝜃 + 𝛽 =
SUM & DIFFERENCE: TANGENTS
SUM & DIFFERENCE: TANGENTS
SUM & DIFFERENCE: TANGENTS
CLASSWORK & HOMEWORKSuppose that cos 𝛼 = −3/5 (for an angle 𝛼 in quadrant II) and that sin 𝛽 = 7/25 (for an angle 𝛽 in quadrant I). Use this information to find the exact values for the following:
Homework:
Trigonometry HW 4
(MathXL)
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