Question

❤✌plz Solve this :-! :-! ❤✌​

Answer 1

Answer:-

2 Cos² 135° + Sin 150° + 1/2 * Cos 180° + tan 135°

=> 2 Cos² (90 + 45)° + Sin (90 + 60)° + 1/2 * Cos (90 + 90)° + tan (90 + 45)°

=> - 2 Sin² 45° + Cos 60° + 1/2 * (- Cos 90 - Cot 45°)

=> - 2 (1/√2)² + 1/2 + 1/2 + 1/2 (0)

=> - 2/4 + 2/2

=> (- 2 + 4)/2

=> 2/2

=> 1

Hence, the value of 2 Cos² 135° + Sin 150° + 1/2 * Cos 180° + tan 135° is 1.