Thursday

April 17, 2014

April 17, 2014

Posted by **Jon** on Wednesday, February 13, 2008 at 4:15pm.

A)4/5

B)-4/5

C)square root of 34/5

D)-square root of 34/5

I chose A

2)Simplify:1-csc^2theta/cot^2theta

A)-1

B)1

C)tan^2theta

D)1/sin^4theta

I chose C

3)Simplify:-5(cot^2theta-csc^2theta)

A)5

B)-5

C)-5csc^2 theta

D)5csc^2 theta

I chose B

4)Which expression is not equivalent to 1?

A)sin^2theta+cot^2thetasin^2theta

B)sin^2theta/1-costheta -1

C)sec^2theta+tan^2theta

D)cot^2thetasin^2theta/cos^2theta

I don't know

5)Which expression is equivalent to tan theta-sec theta/sin theta?

A)-cot theta

B)cot theta

C)tan theta-cot theta

D)tan theta-sec^2theta

I don't know

- Math -
**Guido**, Wednesday, February 13, 2008 at 4:18pmAre you studying for a trig test?

Just curious!

Where is your effort?

Why do you not try to solve each question and show your work?

Then we can help you better.

I would like to know if you are preparing for a math state test.

- Math -
**Jon**, Wednesday, February 13, 2008 at 4:38pmI have been showing my work in my book but not for these questions b/c I have no clue as to how to solve them its just I need them to be checked and its just too time consuming to post the work on the computer. I really appreciate everyone's help.

- Math -
**Damon**, Wednesday, February 13, 2008 at 7:35pmI am willing to do one just to show you how. Express all functions as sin and cos, for example tan = sin/cos and then remember that sin^2 + cos^2 = 1

4)Which expression is not equivalent to 1?

A)sin^2theta+cot^2thetasin^2theta

B)sin^2theta/1-costheta -1

C)sec^2theta+tan^2theta

D)cot^2thetasin^2theta/cos^2theta

I don't know

A)--> sin^2 T ( 1 + cos^2 T/sin^2T)

= sin^2T+ cos^2 T = 1

B) --> sin^2 T/(1-cos T) - 1

= sin^2 T (1+cos T)/(1-cos^2T) - 1

= 1 + cos T - 1

this is not 1

C) --> 1/cos^2 T + + sin^2/cos^2 T

= (1+sin^2 T)/cos^2T

that is not 1 either, but I bet you have a typo in the original sign

D) --> cot^2thetasin^2theta/cos^2theta

= (cos^2 T sin^2T)/(sin^2 T cos^2 T)

= 1

**Related Questions**

math - There are no typos and no work b/c I don't know how to do them. Thanks. 1...

Math - There are no typos and no work b/c I don't know how to do them. Thanks. 1...

Algebra II - Multiple Choice (theta) means the symbol 0 with the dash in it. 1.)...

math - 1)Find the amplitude of y=6cos4theta A)3/2 B)6 C)4 D)pi/2 I chose B 2)...

trig - given that 1/2pi<theta<pi and sin theta=1/5, use appropriate ...

Pre Calc. - Use the sum or difference identity to find the exact value of sin255...

Algebra II - Which of the following expressions are not equal to 1? A) sin^2 ...

Pre-Calculus-check answers - If cos theta = 0.8 and 270<theta<360, find ...

precalculus - find all solutions of each equations a) cos2x=square root of 3/2 b...

trig - given that cos(theta)= (3/5) and sin (theta)<0, find sin(2 theta) cos...