Use the Half-Angle Formulas to Find the Exact Value of the Trigonometric

question 310

Multiple Choice

Use the Half-angle Formulas to find the exact value of the trigonometric function.
- $\cos \frac { 5 \pi } { 12 }$

• A) \(- \frac { 1 } { 2 } \sqrt { 2 + \sqrt { 3 } }\)
• B) \(- \frac { 1 } { 2 } \sqrt { 2 - \sqrt { 3 } }\)
• C) \(\frac { 1 } { 2 } \sqrt { 2 - \sqrt { 3 } }\)
• D) \(\frac { 1 } { 2 } \sqrt { 2 + \sqrt { 3 } }\)

---

Definitions:

Expenses

Costs or charges incurred in the process of conducting activities or achieving objectives, such as living costs or business expenditures.

Student Loan Disbursement

The process by which loan funds are made available to a student by the lending institution, often sent directly to the educational institution to cover tuition and fees.

Income

The money received, especially on a regular basis, for work or through investments.

Tuition

The fee charged for instruction, especially at a formal institution of learning.