Answer:
It was found in the Blombos cave in South Africa and dates back more than 70,000 years. This discovery suggests that abstract thought in humans occurred much earlier than once thought, as seen with the complex geometric array of carved lines.
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Explanation:
You walk 53m to the north, then you turn 60° to your right and walk another 45m. Determine the direction of your displacement vector. Express your answer as an angle relative to east.