Question

Please help with this question ​

Answer 1

We know that
`\sin(45)=\cos(45)` and this is the only point when sin and cos are equal lengths. Because both
`\sin(45),\cos(45)=(√(2))/(2)`

Now if the sin of 30° is a half that would mean that cos of 60° is also a half.

Hope this helps.

r3t40