Question

sinπ/12 cosπ/12 find the value??

Answer 1

sinπ/12cosπ/12
=2sinπ/12cosπ/12÷2

=sin2×π/12÷2

=sinπ/6÷2

=sin30°/2

=1/2×2

1/4

Answer 2

Answer-:

Sin5π/ 12. cos π/12

Sin(π/12 - π/12). cosπ/12

cos π /12 . cos π/12

cos${}^{2}$π/12

cos^2 180° /12 = cosπ^2 15°

bt cos 15° = √3+1 / 2√2

Since

cos^2 15°

=> (√3+1 /2√2)^2

=> 4+2√3/8

=> 2(2+√3)/8

=> 2+√3/4

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