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Find the values of (i) sin5π÷12(ii) cosπ÷12.711(iii) cos7π÷12TT(iv) sinπ÷12. |
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Answer» π = 180°Step-by-step explanation:1.) SIN (5×180/12) = 5 × 15 = sin(75°) = √3 +1/2√22.)COS (180/12)= cos15° = 2√6+1/2√33.)cos( 7 × 180/12) = 7 × 15 = cos(105°) = 1-√3/2√24.) sin(180/12)=sin 15° =√3-1/2√2 |
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