1Find the exact value of the exprssion sin tan18 2Find the e

1.Find the exact value of the exprssion.

sin [tan^-1(-8)]

2.Find the exact value of the exprssion.

cot ^ -1 (-sqrt 3)

3.Find the exact value of the exprssion.

sec^-1( (2sqrt3)/(3))

4. Use a calculator to find the expression rounded to two decimal places.

sec^ -1 (-3)

5. Use a calculator to find the expression rounded to two decimal places.

csc^-1 (4)

6. Use a calculator to find the expression rounded to two decimal places.

cot^ -1 (- sqrt 11)

7. write the trigonometric exprssion as an algebraic expression in u

cot (sin^ -1 (u))

Solution

1) - 8/sqrt(65)

2) pi - cot^(-1)(sqrt(3))

3) pi/6

4) 109.47

5) 14.48