Posted by **Kandee Johnson** on Sunday, May 15, 2011 at 5:22am.

1. Let (-7, 4) be a point on the terminal side of (theta). Find the exact values of sin(theta), csc(theta), and cot(theta).

2. Let (theta) be an angle in quadrant IV such that sin(theta)=-2/5. Find the exact values of sec(theta) and tan(theta).

3. Let (theta) be an angle in quadrant II such that csc(theta)=7/4. Find the exact values of tan(theta) and cos(theta).

4. Use a cofunction to write an expression equal to csc(3pi/8).

Thank You <3

- Math -
**Reiny**, Sunday, May 15, 2011 at 10:33am
1. (-7,4) is in quadrants II,

so x=-7, y = 4

by Pythagoras, r = √(49 = 16) = √65

sinØ = y/r = 4/√65

cscØ = r/y = √65/4

cotØ = x/y = -7/4

2. since sinØ = -2/5 and Ø is in IV,

y = -2, r = 5, then x^2 + 4 = 25

x = √21

etc.

can you finish the rest?

- Math -
**Anonymous**, Tuesday, January 15, 2013 at 3:08am
:(

## Answer this Question

## Related Questions

- trig - If sin theta is equal to 5/13 and theta is an angle in quadrant II find ...
- Trig - Let (theta) be an angle in quadrant II such that sec(theta) -4/3 . Find ...
- trig - If theta is the measure of an angle in standard position with the given ...
- Precalculus check answers help! - 1.) Find an expression equivalent to sec theta...
- Precalculus check answers help! - 1.) Find an expression equivalent to sec theta...
- Math Trig - Let theta be an angle in quad III such that sec theta = -13/5. Find ...
- Algebra II - Multiple Choice Which expression is NOT equivalent to 1? (theta) ...
- trig - the terminal side of angle theta in standard position lies on the line ...
- Calculus - I wanted to confirm that I solved these problems correctly (we had to...
- trig - Let be an angle in quadrant II such that sec(theta) -4/3 . Find the exact...

More Related Questions