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Studentka2010 [4]
3 years ago
15

If sin150=1/2 then find sin75

Mathematics
1 answer:
Darya [45]3 years ago
3 0

Sin75° = Sin(30° + 45°)

= Sin30°.Cos45° + Sin45°.Cos30°

= 1/2 . √2/2 + √2/2.√3/2

= √2/2 ( 1/2 + √3/2 )

= √2/2 ((1+√3 ) /2 )

= (√2 + √6 )/ 4

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