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
`(\pi)/(3) </p><p>=cos 60°</p><p>= 1/2</p><p>Also</p><p>sin[tex] (\pi)/(6)`

=sin30°

= 1/2

So values of sin
`(\pi)/(6)` and cos
`(\pi)/(3)` are 1/2.