Pre calculus experts i need your help :)?

B

bridget b

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1. Find all solutions of the equation in the interval [0,2(pie)) tan^2 Q = -Sq rt 3/6 sec Q

a. 5(pie) / 6 , 7(pie) / 6
b. 3(pie)/4 , 5(pie) /4
c. (pie)/6 , 11(pie) /6
d. none of these

2. Find all solutions of the eq. in the interval [0,2(pie)) 2csc 3x - 4/3 sqrt3 = 0

a. (pie)/9 , 7(pie)/9
b. (pie)/9, 2(pie)/9 , (pie)/2 , 7(pie)/9 , 8(pie)/9 , 13 (pie) /9 , 14(pie)/9
c. (pie)/9 2(pie)/9 , 7(pie)/9, 8(pie)/9 , 13(pie)/9
d. (pie)/9 , 2(pie)/9 , 7(pie)/9, 8(pie)/9 , 13(pie)/9 , 14(pie)/9

3, Find the exact value of cos(285degrees)

a. -sqrt 6 + sq rt 2/ 4
b. sqrt 6 + sqrt 2/4
c. -sqrt 2 + sqrt 2/4
d. -sqrt2 - sqrt 6/4

4. Find the exact value of tan^2x using the double angle fomrula. tanx= -4/7 , 3(pie)/2 < x < 2(pie

a. -56/33
b. -8 sqrt33/49
c. 17/49
d. 8sqrt33/49

5. Use the power-reducing formulas to find the exact value o the tri function
sin^2 157.5 degrees

a. 3 +sqrt2/4
b. 2+sqrt2/4
c. 3-sqrt2/4
d. 2-sqrt2/4
 
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