mathematics

evaluate each of the following..sin 130.tan 60/cos 540.tan 230.sin 400

  1. 👍
  2. 👎
  3. 👁
  1. just plug the numbers into your favorite calculator. What's the trouble?

    1. 👍
    2. 👎
  2. or, reduce to

    (sin 50)(tan 60) / (cos 180)(tan 50)(sin 40)
    = (cos 40)(cot 30) / -(cot 40)(sin 40)
    = -cot 30
    = -√3

    1. 👍
    2. 👎
  3. Huh. Strange font messup
    that's -√3

    1. 👍
    2. 👎
  4. sin 130.tan 60/cos 540.tan 230.sin 400

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Pre-Cal

    Find sin 2x, cos 2x, and tan 2x from the given information. [1]. sin x = 8/17, x in Quadrant I 1). sin 2x =________. 2). cos 2x =________. 3). tan 2x =________. [2]. sin x = -5/13, x in Quadrant III 1). sin 2x =________. 2). cos

  2. math

    Find the values of sin θ, cos θ, and tan θ for the given right triangle (in the link below). Give the exact values. www.webassign.net/aufexc2/8-5-003.gif sin θ= cos θ= tan θ= my answer is c^2 = a^2 +b^2 c^2 = 5^2+12^2 c^2 =

  3. Pre calc

    Find sin(2x), cos(2x), and tan(2x) from the given information. sin(x) = 5/13, x in Quadrant I sin(2x)? cos(2x)? tan(2x)? I honeslty just need one good example of how to do these please show all work and finalize answer

  4. solving trig. equations

    tan(3x) + 1 = sec(3x) Thanks, pretend 3x equals x so tanx + 1 = secx we know the law that 1 + tanx = secx so tanx + 1 becomes secx and... secx = secx sec(3x) = sec(3x) [just put 3x back in for x- you don't really have to change 3x

  1. Pre-calculus help

    I have two problems I am stuck on, if you could show me how to solve the problems it would be much appreciated. 1) Find sin 2x, cos 2x, and tan 2x from the given information. tan x = − 1/6, cos x > 0 sin 2x = cos 2x = tan 2x =

  2. Trig.......

    I need to prove that the following is true. Thanks (2tanx /1-tan^x)+(1/2cos^2x-1)= (cosx+sinx)/(cosx - sinx) and thanks ........... check your typing. I tried 30º, the two sides are not equal, they differ by 1 oh , thank you Mr

  3. math

    Fill in the blank. To find the area of any triangle, use one of the following three formulas: Area = __________. a) 1/2 bc sin(A), 1/2ab sin(C), or 1/2ac sin(B) b) a/sin(A), b/sin(B), or c/sin(C) c)1/2bc cos(A), 1/2ab cos(C), or

  4. Precalculus

    I am trying to submit this homework in but i guess i'm not doing it in exact values because it is not accepting it. I know i'm supposed to be using half angle formulas but maybe the quadrants are messing me up. Please help! Find

  1. MathsSs triG

    Consider sin(x-360)sin(90-x)tan(-x)/cos(90+x) 1.A.SIMPLIFY sin(x-360)sin(90-x)tan(-x)/cos(90+x) to a single trigonometric ratio B.hence or otherwise without using a calculator,solve for X if 0

  2. Trigonometry

    Question: State an equivalent Trigonometric Ratio for each of the following a) cos π/16 b) sin 7π/9 c) tan 5π/4 d) sin 11π/6 My (attempted) answers are: a) -cos π/16 b) sin 2π/9 c) tan π/4 d) -sin π/6 Are any of my

  3. Math

    sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),cos(2theta),tan(2theta) exactly sin(2theta) cos(2theta) tan(2theta) sin(2theta) would it be 2 x (8/17) cos(2theta) would be 2 x (15/17) tan(2theta) would be 2

  4. maths (trigonometry)

    calculate the following: 1)sin 50 degree-sin 70 degree+sin 10deg. 2)cos square 48 deg.- sin square 12 deg. 3)tan 20 deg.+tan 40 deg.+root 3 tan 20 tan 40 Plz. Solve these

You can view more similar questions or ask a new question.