Use the fact that the trigonometric functions are periodic to find the exact value of the expression.. sin405 degrees. tan405 degrees. csc 350. sin 9pi. 4

For tan(405 degrees):

405° = 360° + 45° = 45° = 9π/4 = π/4 

tanx = sinx/cosx 

sin(π/4) = √2/2 

cos(π/4) = √2/2 

[√2/2] / [√2/2] = 1 

Therefore: tan(405°) = 1

You may use the same method for the other given functions.

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