Posted by **Able** on Thursday, March 24, 2011 at 4:38pm.

sec x = -2 , π ≤ x ≤ 3π

Use a calculator to solve for x in the given interval

9)sinθ=0.1473, 0°≤θ≤90°

A) -8.47°

B) 8.38°

C) 98.47°

D) 8.47°

10) cosθ=0.7563,0°≤θ≤90°

A) 37.10°

B) 49.14°

C) -49.14°

D) 40.86°

- Pre Calculus -
**Henry**, Saturday, March 26, 2011 at 12:53am
secx = 1/cosx = -2,

cosX = -1/2,

X = 120 Deg. Q2.

9. sin(theta) = 0.1473,

theta = 8.47

10. cos(theta) = 0.7563,

theta = 40.86.

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