What is the value of sin2θ+cos2θ?
- A. 0
- A. 1 ✓
- C. 2
- D. tanθ
Correct answer
A. 1
Explanation
The identity sin²θ + cos²θ = 1 is known as the Pythagorean Identity in trigonometry. It is true for every value of θ and is one of the most fundamental identities used in mathematics.
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