Find the Exact Value cos(0.7)

Problem

cos(0.7)

Solution

1. Identify the expression as the cosine of a value given in radians.

2. Recognize that 0.7 is not a standard angle (like 0 π/6 π/4 π/3 or π/2 for which an exact algebraic value using radicals is typically derived in trigonometry.

3. Determine that the "exact value" of cos(0.7) is simply the expression itself, as it cannot be simplified further into a more basic exact form without using an infinite series or a decimal approximation.

Final Answer

cos(0.7)=cos(0.7)

Want more problems? Check here!