Respuesta :

sweetyhere

Answer:

hey

Step-by-step explanation:

formula used here

cos inverse (-theta)= π- cos inverse theta

see the attachment above

option c

Ver imagen sweetyhere

Answer:

(2 - π) / 4

Step-by-step explanation:

cos⁻¹(- √3 /2)) = cos⁻¹ (-0.866) = 150°

sin 150° = 0.5 = 1/2

sin (- π /2) = -1

tan (sin (- π /2)) = tan (-1) = - 45° = - π / 4

1/2 + (- π /4) = (2 - π) / 4

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