Question

Which of the following expressions are equal to 1/2? Select all that apply
Cos pi/3
Csc pi/4
Sec pi/3
Sin pi/6

Answer 1

the answer is cos (π/3)

Answer 2

We know that the range of sec & csc is more than or equal to 1 or less than or equal to -1.

Also we shall be using the standard trigonometric tables to find the values of sin and cos.

Hence the value of sec or csc cannot be 1/2.

Now

cos$\frac{\pi}{3}

=cos 60°

= 1/2

Also

sin[tex] \frac{\pi}{6}$

=sin30°

= 1/2

So values of sin$\frac{\pi}{6}$ and cos$\frac{\pi}{3}$ are 1/2.