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Grade: 10


sin cos tan 75?

sin cos tan 75?

8 years ago

Answers : (2)

Ganga sagar Kothashiv
32 Points




8 years ago
Aman Bansal
592 Points

Dear Balsingh,

factor out a sqrt(2) and the 1/4 and you get
Sin75° = √2/4(1+√3)

factor out a sqrt(2) and the 1/4 and you get
Cos75° = √2/4(√3-1)

the √2/4 goes away
so it''s (1+√3)/(√3-1)
rationalize the denominator by multiplying (1+√3) on the top and bottom
you get (1+√3)^2/2 after simplifying
=√3 +2

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Askiitian Expert

8 years ago
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