if sin alpha is 0.28° where 0° is less than or equal to alpha less than or equal to 90°, evaluate cos alpha, tan alpha, sec alpha, cosec alpha and cot alpha. please help, it's urgent.

Answer 1

I'll use a for alpha. sin(a) is not measured in degrees.

sin a = 0.28
since sin^2+cos^2=1, cos a = 0.96

now just use those two values to get all the rest, using the trig function definitions.