Trigonometry

posted by .

Which of the following is equivalent to 1 − cos 2 θ/cos 2 θ?
A. sec2 θ
B. (csc 2 θ ) -1
C. tan 2 θ
D. sin 2 θ
E. –1/sin2 θ

  • Trigonometry -

    you must mean
    (1 - cos^2 Ø) / cos^2 Ø

    (the way you typed it, you would get 1-1 = 0 )


    (1 - cos^2 Ø) / cos^2 Ø
    = sin^2 Ø/cos^2 Ø
    = tan^2 Ø

  • Trigonometry -

    sorry, they're all squared θ not 2 θ

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math - Calculus

    The identity below is significant because it relates 3 different kinds of products: a cross product and a dot product of 2 vectors on the left side, and the product of 2 real numbers on the right side. Prove the identity below. | a …
  2. math

    if cosθ=2/3 and tanθ<0 find the exact value sin(θ-5π/3) sin2θ cos2θ cos(θ/2) can some1 please help me?
  3. trigonometry

    if cosθ=2/3 and tanθ<0 find the exact value sin(θ-5π/3) sin2θ cos2θ cos(θ/2) can some1 please help me?
  4. Pre-Calculus

    If θ represents an angle such that sin2θ = tanθ - cos2θ, then sin θ - cosθ = A. -√2 B. 0 C. 1 D. 2√2 What equation can I use to solve this problem?
  5. Trigonometry

    There are four complex fourth roots to the number 4−4√3i. These can be expressed in polar form as z1=r1(cosθ1+isinθ1) z2=r2(cosθ2+isinθ2) z3=r3(cosθ3+isinθ3) z4=r4(cosθ4+isinθ4), …
  6. Trig

    Given that csc θ = -4 and tan θ > 0, find the exact value of a. x b. sin θ c. cos θ d. r e. sec θ f. cot θ
  7. Trigonometry

    Could someone please help me with the following q's I'm having some trouble: 1.) cot θ (theta) = 0.791, find sec θ and tan θ 2.) tan θ = 9/40, what is the value sin^2θ + cos^2θ
  8. Math Question

    Given tan θ = -8/5 and sin θ < 0, find sin θ, cos θ, csc θ, sec θ, and cot θ.
  9. precalculus

    the following is a point not on a unit circle. θ → (-5,4) use it to find: 1. cos θ = -5 2. csc θ = 1/4 am i correct?
  10. PRECALC

    solve the equation 1. cos(θ) − sin(θ) = 1 2.2 cos(θ) tan(θ) + tan(θ) = 1 + 2 cos(θ) 3. sin(θ) cos(3θ) + cos(θ) sin(3θ) = 0 4. sin(2θ) cos(θ) − cos(2θ) sin(θ) …

More Similar Questions