Question

Find the principal solutions of sin e
1
2​

Answer 1

Step-by-step explanation:

we know that

sinx=sin π/4 and by allied angles

we also know that

sinx (π-x) =sin(π-π/4)=sin 3/4

=sinπ/4 =sin 3π/4 =7/√2

such that 0<π/4<2π and

0<3π/4<2π