Question

find trigonometric ratio of-120 degree​

Answer 1

Answer:

sin 120° = sin (1 × 90° + 30°) = cos 30° = √32

cos 120° = cos (1 × 90° + 30°) = - sin 30° = - 12

tan 120° = tan (1 × 90° + 30°) = - cot 30° = - √3;

csc 120° = csc (1 × 90° + 30°) = sec 30° = 2√3

sec 120° = sec (1 × 90° + 30°) = - csc 30° = - 2;

tan 120° = tan (1 × 90° + 30°) = - cot 30° = - √3;

cot 120° = cot (1 × 90° + 30°) = - tan 30° = - 1√3

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Step-by-step explanation: