jika sin 105°=p, nilai p-1/4√6=………… a. 1/4√2 b. 1/2√2 c. 1/4√6 d. 1/4√6+1/4√2 e. √6+1/4√2
Matematika
herurohman41
Pertanyaan
jika sin 105°=p, nilai p-1/4√6=…………
a. 1/4√2
b. 1/2√2
c. 1/4√6
d. 1/4√6+1/4√2
e. √6+1/4√2
a. 1/4√2
b. 1/2√2
c. 1/4√6
d. 1/4√6+1/4√2
e. √6+1/4√2
1 Jawaban
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1. Jawaban Atika99
sin 105 = sin (60 + sin 45 ) = sin 60 cos45+ cos 60 sin 45 = √3/2 x √2/2 + 1/2 x √2/2
= √6/4 + √2/4 = 1/4( √6+ √2)
Jadi p - √6/4 = √6/4 + √2/4 - √6/4 = √2/4= 1/4√2 (A)
Mohon dijadiin jawaban terbaik yaa, buat ngerubah status ,makasiii yaa =)))