Question

Show that 2 cot^-1 3/2 + sec^-1
13/12 = pi/2
​

Answer 1

Answer:

Step-by-step explanation:

since 180° = π radian

So, -95/2 degree = (π/180) * (-95/2) radian

                              = -19π/(36 * 2)

                              = -19π/72 radian

So, -47° 30' = -19π/72 radian

(iii) 240°

We know that 180° = π radian

So, 240° = (π/180) * 240 radian = 4π/3 radian

(iv) 520°

We know that 180° = π radian

So, 520° = (π/180) * 520 radian = 26π/9 radian

hope it helps

:)