math

find the exact value of [sec(-30 degrees)- cot 120 degrees]/1-cosec^2(45 degrees)

Find the exact value of [sin^2(355 degrees) + cos^2 (355 degrees)]/ tan^2 (30 degrees)

  1. 👍 0
  2. 👎 0
  3. 👁 238
  1. sin^2 + cos^2 = 1, so you have

    1/tan^2(30) = 1/3

    for the other, plug in the values. recall that 1-csc^2 = -cot^2, so the bottom is just -1

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. CHEM

    What are the expected bond angles in ICl4+ (or) ICl_4^+ ?? I think that I have the stucture drawn correcty: I is the central atom with one lone pair above it. I then have the Cl's with 6dots around them & then bonded, singly, to

  2. Maths

    The bearing of A from B is 060 degrees. What is the bearing of B from A? Is it: a) 60 degrees b) 240 degrees c) 120 degrees d) 200 degrees p.s. The questions I sent earlier was an acccident To get reciprocal bearings, add 180

  3. Math help please!!!!!

    The triangles below are similar figures. Use a proportion to find the length of X.The longer triangle has 16 on the left side,6 on the bottom inside it says 120 degrees and at the top it says 25 degrees.The smaller triangle says x

  4. Math

    Four of the angles of a pentagon measure 85 degrees, 110 degrees, 135 degrees, and 95 degrees. Find the measure of the missing angle. A. 115 degrees B. 95 degrees C. 135 degrees D. 85 degrees Is the answer D?

  1. Math

    A density graph for all of the possible temperatures from 60 degrees to 260 degrees can be used to find which of the following? a. The probability of a temperature from 90 degrees to 180 degrees b.The probability of a temperature

  2. Algebra 2

    Find the exact value of each expression if 0 degrees < theta < 90 degrees If tan (theta) = 1/2 , find cos(theta) If cos(theta) = 8/17, find csc (theta) Find the exact value of each expression is 180 degrees < theta < 270 degrees

  3. Math

    Which table best represents the graph of the equation theta=45 degrees? a. theta- 45 degrees, 45 degrees, 45 degrees, 45 degrees r- 1 , 2 , 3 , 4 b. theta- 45 degrees, 90 degrees, 135 degrees, 180 degrees r- 1 , 2 , 3 , 4 c.

  4. trig math 30

    Find the exact value of cos 8 degrees cos 38 degrees + sin 8 degrees sin 38 degrees

  1. pre calculus

    Cot 495 degrees... a) -tan 135 degrees b) -cot 135 degrees c) cot 135 degrees d) -cot 315 degrees

  2. Math

    1) A ladder that is 15m long is leaning up against a building. The ladder makes an angle of 30 degrees with the ground. a) Find an exact expression for the height at which the top of the ladder contacts the wall of the building.

  3. Math

    Solve:(sec 35 degrees) (csc 55 degrees) - (tan 35 degrees) (cot 55 degrees)

  4. math

    find the angle that is coterminal to 525 degrees and lies between 0 degrees and 360 degrees? 165 degrees 255 degrees 195 degrees 345 degrees

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