Math Problem Statement

Find the function value. Round to four decimal places. cos 66degrees Question content area bottom Part 1 cos 66degreesalmost equals

enter your response here ​(Round to four decimal places as​ needed.)

Solution

To find the value of cos(66)\cos(66^\circ), you can use a calculator or trigonometric table. Here's the calculation:

cos(66)0.4067\cos(66^\circ) \approx 0.4067

Thus, the value of cos(66)\cos(66^\circ), rounded to four decimal places, is:

0.4067\boxed{0.4067}

Would you like further details on the calculation or any additional explanations?

Related Questions:

  1. What is the value of sin(66)\sin(66^\circ) rounded to four decimal places?
  2. How do you convert 6666^\circ to radians?
  3. How is the cosine function related to the sine function at complementary angles?
  4. What is the significance of rounding in trigonometric calculations?
  5. How do you calculate the cosine value without a calculator?

Tip: Always ensure your calculator is in the correct mode (degrees or radians) based on the angle's unit.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Cosine Function
Angle Measurement

Formulas

cos(θ)

Theorems

Trigonometric Functions and Their Properties

Suitable Grade Level

Grades 9-12