Math, asked by rakshita19jimba006, 6 months ago

The value of sin2 24° + sin2 66° + 2 tan 26° tan 64° is​

Answers

Answered by shilshaurya5606
1

Answer:

3

Step-by-step explanation:

sin²24° + sin²66° + 2tan26° tan64°

=> sin²24° + cos²(90° - 66°) + 2tan26° cot(90° - 26°)            [cos²(90° - θ) = sin²θ; cot(90° - θ) = tanθ]

=> sin²24° + cos²24° + 2tan26° cot26°

=> 1 + 2tan26°(1/tan26°)             (sin²θ + cos²θ = 1; tanθ = 1/cotθ)

=> 1 + 2(1)

=> 1 + 2 => 3

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