jika di ketahui f(x)= sin x ,nilai f(pi/4)=
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f() = sin
= sin 45
=
f(π/4) = sin π/4
ingat: π = 180 derajat, maka;
f(π/4) = sin 180/4
f(π/4) = sin 45
f(π/4) = 1/2 √2
Kalau Membantu, Jangan lupa jadiakn yang terbaik ya :)