Question

Using Special Angle Triangles find the exact value :

a) cos 45º
b) tan 30 °
C) CSC 45°
d) sec 60°

I’d appreciate your help please and thank you!

Answer 1

Explanation:

Trigonometric table has the value of the trigonometric ratio of Sin, Cos , Tan , Csc, Sec & Cot of the angles 0° , 30°, 45° , 60°, 90°

Cos 45 =
`(1)/(√(2) )`

Tan 30 =
`(1)/(√(3) )`

`Csc 45 = √(2)\\\\\\Sec 60 = 2`