Question

How do you find the values of the other five trigonometric functions of the acute angle A with `sinA=2/4`?

Answer 1

`sin A = 1/2`
`cos^2 A = 1 - sin^2 A = 1 - 1/4 = 3/4` --> `cos A = sqrt3/2`
`tan A = sin/(cos) = 1/sqrt3 = sqrt3/3`
`cot A = 1/(tan) = sqrt3`
`sec A = 1/(cos) = 2/sqrt3 = 2sqrt3/3`
`csc A = 1/(sin) 2`