Question

Find the value of cos 75°​

Answer 1

Answer:

0.25...

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Answer 2

Answer:

√6-√24

Step-by-step explanation:

Apply the trig identity: cos (a + b) = cos a.cos b - sin a.sin b

cos

(75)=cos(30+45)=cos30⋅cos45−sin30⋅sin45=(√32)(√22)−(12)(√22)=√6−√24

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