Question

Que no :-

✏✏22

1 one .


Sin pie/6 Cos 0 +Sin pie/4 Cos pie/4+Sin pie/3 Cos pie/6=7/4


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Answer 1

Hii its tom85

1/2 * 1 + 1/sqrt2 1/sqrt2 + sqrt3/2*sqrt3/2

1/2 + 1/2 + 3/4

2+2+3/4

7/4

sinπ/6=1/2

cos0=1

sinπ/4 =cosπ/4=1/sqrt2

sinπ/3 = cosπ/6=sqrt3/2

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hope it may helps you

Answer 2

Step-by-step explanation:

sin π /6 = 1/2

cos 0 = 1

sin π /4 = 1/ sqrt 2

sin π/3 = sqrt3/2

then

Sin pie/6 Cos 0 +Sin pie/4 Cos pie/4+Sin pie/3 Cos pie/6

1/2 . 1 + sqrt2. sqrt3/2 + sqrt 3/2 . sqrt 2

1/2 + 1/2 + 3/2

2 + 2 + 3/2

7/2

hence proved--------