Question

What is the value of sin² θ + cos² θ?​

Answer 1

Answer:

2(sin²Θ - 1) = cos²Θ. 2(- cos²Θ) = cos²Θ. - 2 cos²Θ = cos²Θ. 3 cos²Θ = 0. cos²Θ = 0. From the Trigonometric table cos 90° = 0 ⇒ cos² 90° = ...