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What is the value of sin² θ + cos² θ?

35. What is the value of sin² θ + cos² θ?

1. 1
2. 1-cos² θ
3. Sin θ * cosec θ
4. Infinity

Answer

The correct answer is: A) 1

Explanation

The sum of sin² θ and cos² θ is equal to one. This identity is true for all trigonometric angles. It demonstrates the basic link between the sine and cosine functions in a right triangle.