Question

Sin 37*cos 23+cos 37*sin 23 =...

tolong d bantu ya.soal ulangan ini

Answer 1

Formula :
sin(a)cos(b) + cos(a)sin(b) = sin(a+b)

maka nilai dari :
sin(37)cos(27)+cos(37)sin(27) = sin(37+23) = sin(60)) = 1/2 √3