3 years ago

Please help!!!! i tried putting into a calculator but i am pretty sure i am incorrect :((

Mathematics

2 answers:

Serga [27]3 years ago

6 0

Answer:

hey

Step-by-step explanation:

formula used here

<h2>cos inverse (-theta)= π- cos inverse theta</h2>

see the attachment above

option c

dimulka [17.4K]3 years ago

4 0

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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