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  1. QUESTION 44.1 Simplify, without using a calculator: 4.1.1 𝑠𝑖𝑛 (−135°)·𝑠𝑖𝑛 240°·𝑐𝑜𝑠
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  2. Which of the following are true? Select all that apply.A. tan(theta)= cos(theta)/sin(theta) B. cot(theta)= cos(theta)/sin(theta)
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  3. 1.Verify the basic identity. What is the domain of validity? Cot θ = cos θ csc θ 2. Verify the identity. Justify each step.
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  4. Reduce cos 1102∘to the sine of an acute angle sin ....∘
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  5. 45) Prove the following identities. Use a separate piece of paper.a) sec x − tan x = 1−sinx cos x b) (csc x − cot x) 2 =
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  6. Suppose sin(4) -Use the trig identity sin² (A) + cos2 (4) - 1 to find cos(4) in quadrant I. Show all steps and round to
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  7. Given that sin(𝐴 + 𝐵) = sin 𝐴 cos𝐵 +cos 𝐴 sin𝐵, find the value of sin 105 °. A. √42 (√3 + 1) B. √42
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    2. Benny asked by Benny
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  8. 1. (sin θ - cos θ)^22. sec^2 θ - tan^2 θ - sin^2 θ Can you please show the step by step process of how to simply both?
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  9. solve:cos^4(x)-sin^4(x)=cos(2x) cos(4x)=cos^2(x)-sin^2(x)
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    2. jennie asked by jennie
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  10. prove thatsin(pi/2 - x)cot(pi/2 + x) = -sinx
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    2. marcella asked by marcella
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  11. Suppose that sin(t) = x/(x + 3)Use this information and a reference triangle to eliminate the trigonometric function from the
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  12. If sin ⁡x= 7/25, and 0 <x< π/2, what is tan⁡(x − π/4)?I don't get how to do this. We're talking about the "Difference
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    2. Stevie asked by Stevie
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  13. Find the EXACT value of sin(2A) if cscA=5/4Assume A is a Quadrant I angle in standard position. sin(2A+=
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    2. math asked by math
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  14. Show that sin(x+pi)=-sinx.So far, I used the sum formula for sin which is sin(a+b)=sin a cos b+cos a sin b. sin(x+pi)=sin x cos
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  15. If cosA + sinA= root2 cosAShow that cosA - sinA= root2 sinA
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  16. Use the Pythagorean identities rather than reference triangles.Find tanθ and cotθ if secθ = 3/2 and sinθ <0 Please help me ,
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  17. Evaluate using the Pythagorean identities.Find sinθ and cosθ if tanθ = 1/4 and sinθ >0
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  18. tan4theta = (radical 3) / 3theta = 7pi/24, 13pi/24, 19pi/24 Let me know if im right.
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  19. How do I find the value of sin ( A-B)When tan A= 4/3 Cot B= 5/12
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  20. Sin^2x/cosx =tanxsinxI need help in verifying also please tell me what identity u started with thank you!
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    2. Sarah asked by Sarah
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  21. If 5cosA+3=0 and 180(degrees)<A<360(degrees)Determine 1. Tan^2A And 2. SinA over cosA
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  22. Consider ∠C such that sin C = 7/25a) What are the possible quadrants in which ∠C may lie? b) If you know that cos C is
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  23. Show that the following are not trigonometric identities1.tan 2x = 2tan x 2. sec x= sqr rt 1+tan^2 x 3. sin(x+y)=sin x +sin y
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    2. Liv asked by Liv
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  24. sin u=1/3 and sin v=1/4.Then cos u = sqrt(8)/3 cos v = sqrt(15)/4 sin(u+v) = ?
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  25. Verify/prove the following:(sinA+tanA)/(1+secA) = sinA ______________________________ tanu = 1+sinu-cos^2u/cosu(1+sinu)
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    2. Kid asked by Kid
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  26. Verify/prove that:sinAcosA/1-cosA = sin^2/tanA-sinA
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  27. Find the exact values requested. No decimal approximations.Given that cot θ = 4 for an acute angle θ, A. Find sinθ. B. Find
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  28. Prove:1) 1 / sec X - tan X = sec X + tan X 2) cot A + tan A = sec A csc A 3)sec A - 1 / sec A + 1 = 1 - cos A / 1 + cos A
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