Roboguru

Nilai adalah ...

Nilai sin space 75 to the power of ring operatoradalah ...

Jawaban:

Ingat kembali rumus penjumlahan sudut pada sinus:

sin left parenthesis alpha plus beta right parenthesis equals sin alpha space cos beta plus cos alpha space sin beta 

Sehingga:

table attributes columnalign right center left columnspacing 0px end attributes row cell sin space 75 to the power of ring operator end cell equals cell sin space left parenthesis 30 degree plus 45 degree right parenthesis end cell row cell sin space left parenthesis 30 degree plus 45 degree right parenthesis end cell equals cell sin space 30 degree cos space 45 degree plus cos space 30 degree sin space 45 degree end cell row blank equals cell 1 half cross times 1 half square root of 2 plus 1 half square root of 3 cross times 1 half square root of 2 end cell row blank equals cell 1 fourth square root of 2 plus 1 fourth square root of 6 end cell row blank equals cell 1 fourth open parentheses square root of 2 plus square root of 6 close parentheses end cell end table 

Jadi, nilai dari sin space 75 to the power of ring operator adalah table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 1 fourth end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses square root of 2 plus square root of 6 close parentheses end cell end table 

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