) cos () Simplify 4 sin using a double-angle identity. 4 COS

Q: ind sin and cos

A:

Q: 2. Given tane = -√√3, 90° ≤ ≤ 180°, the exact value of sine can be written in the form √a b value of…

A:

Q: tan A =-3, A in QII L. Find sin (A + B), cos(A+B), and tan(A+B) if cotB =-2, Bin OIV

A:

Q: --cos(45")? Explain. 3. Does cos

A:

Q: Which identity is correct? cos(θ + π) = cos(θ) cos(θ + π) = -cos(θ) cos(θ + π) = sin(θ) cos(θ + π)…

A: cosθ+π=cosθ cosπ-sinθ sinπ    ∵cosx+y=cosxcosy-sinxsiny=cosθ·-1-sinθ·0=-cosθ

Q: If sinA +sin2A = 1 , then the value of the expression (cos2A+cos4A) is

A:

Q: Use half angle formulas or formula for reducing poiwers to fill in the blanks in the identity below:…

A:

Q: cos 70° cos 59° -8sin? 30° sin 20° sin 31°

A:

Q: Find the exact value of the expression, if possible. (If not possible, enter IMPOSSIBLE.)…

A: Given: The expression is coscos-1-5. Concept used: Inverse trigonometric relation: cos-1-x=π-cos-1x…

Q: c uous: Use Fundamental Identities and/or the Complementary Angle Theorem to find the exac sin 20…

A:

Q: Use half angle formulas to fill in the blanks in the identity below: 1 1 (sin(4x))* - z cos( ar )+…

A: Formula-

Q: (15) sin 105° (16) cos 75° (17) sin- 12 п (18) cos- 8

A: 15) The value of sin105° can be calculated as,    cos210°=1-2sin2105…

Q: Use half angle formulas or formula for reducing powers to fill in the blanks in the identity below:…

A:

Q: Use right triangles to explain why cos-1 x + sin-1 x = p>2.

A: given: a right angled triangle. the given expression is: sin-1(x)+cos-1(x)=π2

Q: Which of the following is equivalent to cos 0-2 cos 0 sin0 -? 1-sin 0+sin²0-cos²0' tan 0 cot 0…

A:

Q: a) If α- tan find the exact values of sin a and cos a. 4

A: Note: As you have posted independent questions, according to our policy we are only allowed to post…

Q: prove the identity.  1+Cos?= Sin2?/ 1-Cos?

A:

Q: Find the exact value of cos 2 .... cos 2 (Type your answer in radians.)

A:

Q: 6. Use fundamental identities to write tane in terms of sin0 for an acute angle 6

A: Solve

Q: Use a half angle formula to fill in the blanks in the identity below: (cos(6z))? = cos( x) %3D

A:

Q: 4. To find sin(cosA), we let 0 = cos"() and complete the right triangle at the top of the next…

A: The value of sincos-1513 can be calculated as, Let, cos-1513=θ      ⇒cosθ=513  A right angled…

Q: If sin(θ)= √65/9 and θ is in the 2nd quadrant, find the exact value of cos(θ)

A:

Q: Use the Addition Formula for Cosine to prove the Double-Angle Formula for Cosine. cos 2x = cos?(x) –…

A:

Q: Use half angle formulas or formula for reducing powers to fill in the blanks in the identity below:…

A:

Q: Verify the identity csc (20)- sin (20) cot (20) COS co (20)

A: We have to check

Q: Verify the identity. sin 20 cot0 1- cos 20

A: To prove the given identity

Q: Use half angle or power reduction formulas to fill in the blanks in the identity below: (sin(2z))“…

A: The given expression is sin2x4. Rewrite as follows. sin2x4=sin22x2=1-cos22x2=1-1+cos4x22…

Q: 3 and sin x < 0. 5 Use the double-angle identities to find tan (2x) if cos x = Enter an exact…

A:

Q: a

A:

Q: sin(0) = ² 3 and 2 0<itwhat is the exact value of cos(20)? Given that Explain how you determined…

A: Apologies for the inconvenience.   Given that: sinθ=23 and π2&lt;θ&lt;π. We have to solve for cos2θ

Q: 1. COS I Verify the identity sin 2

A: see below the answer

Q: Use the appropriate reciprocal identity to find the exact value of sec 0 for the given value of cos…

A: NOTE: Refresh your page if you can't see any equations. .

Q: Use half angle formulas to fill in the blanks in the identity below: (sin(6x))4 = 1 += cos( 8 x) 1 2…

A:

Q: Use half angle formulas or formula for reducing powers to fill in the blanks in the identity below:…

A:

Q: COS 437/12 COS7T4+Sin 43T112 Sin? Ti/4

A: The expression is given by cos43π12cos7π4+sin43π12sin7π4 To evaluate: The value of the expression

Q: 14. Write sin 36° in terms of cosine. 14. CoS

A: We have to write sin 36° in terms of cosine. We know the complementary formula, sin θ=cos90°-θ

Q: Find the exact value of cos O and cot0 given csc0=- 9 and tan 0 <0. Cos 0 = cot0=

A: We use Trigonometry ratios

Q: Find the exact value by applying the double or half angle identities: √1-cos(-30°)/2

A: Explained below

Q: Use half angle formulas to fill in the blanks in the identity below: 1 (sin(8x)) = 1 COS |x)+cos((…

A: topic- trigonometric identities

Q: Use half angle or power reduction formulas to fill in the blanks in the identity below: 1 cos( 1…

A: Given:sin7x4

Q: Prove the identity. cos?(5x) – sin?(5x) = cos(10x) Use a Double-Angle Formula and simplify. cos?(5x)…

A: Given that

Q: 2 sin 75° cos 75°

A: Trigonometric formula: - We only consider trigonometric formulas for right-angled triangles when we…

Q: Find the exact value. (Decimal answers are not accepted.) sin( – 870°) = cos( - 870°) = %3D

A:

Q: If sin A= 1 find cos 2A.

A:

Q: Use exact values to show that the following is true. cos 120° = cos? 60° – sin?

A: We know that Therefore, we have

Q: To find sin cos-), we let 0 = cos O and complete the right triangle below. We find that sin cos-O)…

A:

Q: Use a half angle formula to fill in the blanks in the identity below: (cos(4z))² - cos( 2)

A:

Q: Find sin O if given cos(-0) = 5 tan 0 <0. Use the Fundamental Identify or draw a right triangle in…

A:

Q: 1) cos-105° COS 3) sin 165°

A: