Question

Name 4 Other angles whose cosine is the same as cos∏/3 ⁡explain using mathematical language how you know this is true. (calculations only using a calculator is not considered mathematical language). Is this statement true or false? Explain your answer.
All angles that have the same cosine will have the same sine

Answer 1

The other four angles will be 7∏/3, 13∏/3, 19∏/3, and 31∏/3

Cosine of angles

Generally, given cos (x), the value that is similar to cos x will be sum of the angle and multiple of 360.

Hence for the angle cos(∏/3), the angles similar to this angle will be expressed as:

Cos(2∏n + ∏/3) where:

• n is any positive integer.

The other four angles will be 7∏/3, 13∏/3, 19∏/3, and 31∏/3

Learn more on trigonometry identity here: https://brainly.com/question/7331447