Express csc 024 as a cofunction of a complementary angle rou

Express csc 0.24 as a cofunction of a complementary angle, rounded to two decimal places. HINT: The angle 0.24 is in radians.

Solution

csc x = sec ((/2) - x) ; x is in radians

==> csc 0.24 = sec ((3.14/2) - 0.24)

==> csc 0.24 = sec (1.57 - 0.24)

==> csc 0.24 = sec 1.33

Hence csc 0.24 as a cofunction of a complementary angle is sec 1.33 (rounded to two decimal places)