Solution: If cos 65° + cos 55° = cos θ, find the θ in radians.

If cos 65° + cos 55° = cos θ, find the θ in radians.

If cos 65° + cos 55° = cos θ, find the θ in radians.

Problem Statement: CE Board November 1993

If cos 65° + cos 55° = cos θ, find the θ in radians.
  • A. 0.765
  • B. 0.087
  • C. 1.213
  • D. 1.421

Problem Answer:

The value of θ is 0.087 radian

Solution:

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