Trig+ check+ thanks!

[kathy's]

I am doing an assignmnet for trig and I was wondering if you could check if my answers are right? thanks in advance!

1) Which of the following is an x-intercept of the graph of y= 3 sin 2x?
A. 330°
B.270°
C.60°
D.45°

Myanswer: B.270°
2) A-1 / Cot A CSC A, what is the simplest equivalent trigonometric expression?
A. sin A
B. Cos A
C. Tan A
D. csc A
Myanswer:C. Tan A
3) Of the six trigonometric ratios, if only cosine and secant are positive, the angle is in the
A. First quadrant
B. Second quadrant
C. Third quadrant
D. Fourth quadrant
Myanswer: A.First quadrant
4) For an angle of 214°, the reference angle and value of sin 214° are
A. 214° - 180°, sin (214° - 180°)
B. 214° - 180°, -sin (214° - 180°)
C. 270° -214°, - sin (270° - 214°)
D. 270° -214°, sin (270° - 214°)
My answer: A. 214° - 180°, sin (214° - 180°)
5) For the graph of y= 2sin 3x, which of the following is not an x-intercept?
A. 60 °
B. 90 °
C. 240 °
D. 2 pi-square rad
My answer: B. 90 °
6) For tan A/ sec A, what is the simplest equivalent trigonometric expression?
A. Sin A
B. Cos A
C. Csc A
D. Cot A
My answer: A. Sin A

Thanks in advance! :wink:

 

[skeeter]

I am doing an assignmnet for trig and I was wondering if you could check if my answers are right? thanks in advance!

1) Which of the following is an x-intercept of the graph of y= 3 sin 2x?
A. 330°
B.270°
C.60°
D.45°

Myanswer: B.270° correct
2) A-1 / Cot A CSC A, what is the simplest equivalent trigonometric expression?
A. sin A
B. Cos A
C. Tan A
D. csc A
Myanswer:C. Tan A what is the "A-1" in front of / cotA cscA ?
3) Of the six trigonometric ratios, if only cosine and secant are positive, the angle is in the
A. First quadrant
B. Second quadrant
C. Third quadrant
D. Fourth quadrant
Myanswer: A.First quadrant nope
4) For an angle of 214°, the reference angle and value of sin 214° are
A. 214° - 180°, sin (214° - 180°)
B. 214° - 180°, -sin (214° - 180°)
C. 270° -214°, - sin (270° - 214°)
D. 270° -214°, sin (270° - 214°)
My answer: A. 214° - 180°, sin (214° - 180°) first half is correct
5) For the graph of y= 2sin 3x, which of the following is not an x-intercept?
A. 60 °
B. 90 °
C. 240 °
D. 2 pi-square rad
My answer: B. 90 ° correct
6) For tan A/ sec A, what is the simplest equivalent trigonometric expression?
A. Sin A
B. Cos A
C. Csc A
D. Cot A
My answer: A. Sin A correct

Thanks in advance! :wink:

 

[kathy's]

sorry I missed a part:

2)csc^2 A-1 / cot A csc A, what is the simplest equivalent trigonometric expression?
A. sin A
B. cos A
C. tan A
D. csc A
Myanswer:C Tan A

trigonometric ratios, if only cosine and secant are positive, the angle is in the
A. First quadrant
B. Second quadrant
C. Third quadrant
D. Fourth quadrant
Myanswer: D. . Fourth quadrant

thanks once again!