Question

cos 75 degree is equal to ​

Answer 1

Answer:

Answer is ✓6-✓2/4

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Hope it helps you and please mark it as brainliest :))

Answer 2

Answer:

cos 75

=cos (45+30)

=cos 45 cos 30-sin 45 sin 30

=1/root 2 × root 3/2-1/root 2 × 1/2

=root 3/2 root 2-1/2 root 2

=root 3-1/2root 2