trig

posted by .

angle x lies in quadrant 3 and cos(x)=-.6. Find cos(3pi/2-x)

  • trig -

    cos(x) = -0.6.
    X = 126.87 deg.

    cos(3pi/2-X) = cos(270-126.87) = -0.8

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Trig

    Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < 2pi Find: sin (v + u) cos (v - u) tan (v + u) First compute or list the cosine and sine of both u and v. Then use the combination rules sin (v + u) = sin u cos …
  2. trig

    Find cos(a=b). sin a = 3/5, a lies in Quadrant II, and cos b = 5/13, b lies in Quadrant I.
  3. trig

    Find sin è/2 for cos è = 1/4 and è lies in Quadrant I.
  4. Math

    If angle x lies in quadrant 3 and cos(x)= -0.6 Find cos(3pi/2-x)
  5. trig

    Consider the angle in standard position whose measure is radians. The terminal side of this angle is in the third quadrant and lies on the line given by y=10x. Find sin and cos.
  6. trig

    how do you work find sin (a-B)beta sign. sin a = 12/13,a lies in quadrant II,and cos B = 15/17, B lies in quadrant I.
  7. trig

    Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help
  8. maths

    Angle a lies in the second quadran and angle b lies in the third quadrant such that cos a = -3/5 and tan b = 24/7. Determine an exact value for cos (a+b), sin(a-b)
  9. precalculus

    find the values of the requested trig functions using the given value and quadrant in which the point corresponding to the angle lies. quadrant II; sinθ=4/5 find cosθ and tan θ
  10. Grade 12 Trigonometry

    Angle a lies in the second quadrant and angle b lies in the third quadrant such that cos(a)=-3/5 and tan(b)=24/7. Determine an exact value for a) cos(a+b) b) sin(a-b) c) sin2a

More Similar Questions