Question

simplify (1 - cos teeta)( 1+ cos teeta ) ( 1+ cot^ 2 teeta). answer only if u know.....

Answer 1

the ans is the 1 my dear friends....

Answer 2

Hey mate!

Here is yr answer......

=> (1-cosΦ) (1+cosΦ) (1+cot²Φ)

=> 1 - cos²Φ (1+cot²Φ)

=> sin²Φ (1+cos²Φ/sin²Φ)

=> sin²Φ (sin²Φ+cos²Φ/sin²Φ)

=> sin²Φ (1/sin²Φ)

=> 1 × 1

=> 1 (answer)


Identities used :
~~~~~~~~~~~~~~

(a+b)(a-b) = a²-b²

1 - cos²Φ = sin²Φ

cot²Φ = cos²Φ/sin²Φ



Hope it helps u buddy......


#BeBrainly