cos(-25°) = _____. cos 115° cos 25° sin 25° -cos 335°

Q: Cos^-1 (cos(-60*)) Answer in degrees pls.

A: Solution is given below:

Q: Angle β intersects the unit circle at point (0.8996, -0.4368). What is the value of cos(β)?

A: Cordinates (x,y)  on unit circle are represented by (cosx,sinx)

Q: ds (cos (0)) COS

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Q: Approximate to four decimal places, when appropriate.

A: Approximate to four decimal places, when appropriate. a) sin 45°b) sin 45c) cos3π/2°d)cos3π/2

Q: (tan? x+ 1)(cos? –- 1) = - tan? x (tan? x + 1)(cos - 1) = - tan? x 4. 5. sin x 6. = csc x+ cot x…

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Q: 3 (ix) cos² A + cos²| A + · + cos? 3 A 3 2

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Q: sect tan³Od0 cos® tane B sec® sec²0 D cose E None A)

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Q: Simplified form of cos? 0 + cos² (90° – 0) + cos 0 2

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Q: 57. Find the six trigonometric values of 0 = COS (3/7). Give exact answers.

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Q: sin 2t-cos2t dt 1. S 1+3 cos 4t

A: First reduce the expression using trigonometric identities than integrate by substitution method.

Q: 12 sin A = cos B = 5 where A and B are in the same quadrant. Find: 1. Given 13 and a) cos ec(-8) b)…

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Q: Solve the equation on the interval 0 ≤ θ < 2π. cot θ = 2 cos θ

A: Explanation of the answer is as follows

Q: 12. In a right triangle ABC, angles A and B are acute. If cos A = ½ and sin B = 2 then cos (A - B)…

A: For the given right angle triangle, Cos(A-B) is determined as shown below

Q: a. 2 cos? 0 + cos 0 – 1 = 0 b. 2 sin? 0-5 sin 0 + 3 = 0 C. csc2 0 = cot 0 + 1 %3D

A: Solve trigonometric ratio as quadratic

Q: 67 5. The exact value of sin¯'(sin(÷)) is i) 67 i) iii) iv) not listed

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Q: Find the solutions of the equation that are in the interval [0, 2?). (Enter your answers as a…

A: Note:- Here in your question in place of question mark there must be interval [0, 2π)  And equation…

Q: T- 31 TC TC cose sin 2 .2 sec 4 COS Cos - - (3) Find the value of TC + cot 3 TT tan - - 3.

A: Given: cosθsin(π2)cos2(π6)sec2(π4)tan(π3)+cot(π3)=?

Q: 12. Use a calculator to find values of y in degrees. a. cos (.5) b. sec (-2.46) c. tan (-45.543) COS…

A: Given, Part (a):

Q: Solve the equation for x if 0 ≤ x < 2π. Give your answer in radians using exact values only. (Enter…

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Q: estion: If sin(A) = 0.35 and cos(A) < 0, determine: cos(A) = sin(2A) = cos(2A)

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: b. tan(A-B) 4. Given A in Quadrant I with sin A = - and angle B in Quadrant l with 13 cos B = 3/5,…

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Q: V3 If sine what are the values of cos O and tan O? 2 and 7<0< cos e tane = -V3 2 cos e 1. tane = 3 1…

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Q: Simplified form of cos? 0 + cos²(90° – 0) + cos 0 2

A: Put cos2(90-thita)=sin2(thita) and solve it.

Q: --9 Angle a lies in quadrant 4 where sin a = -12 and angle b lies in quadrant 2 where cos b = 37 (a)…

A: Given : sin a = -9/41 and cos b = -12/37

Q: Find (- /3 +i)25 O A. None of the above. В. 225 cos 2л -+i sin- 3 2л 3 С. 57 225 cos-+ i sin 3 5л 6.…

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Q: 5) Solve the following trigonometric equation for all values of 0 in the interval [0, 27) 1+ cos 0 =…

A: We can solve the given problem using the concept of trigonometry.

Q: sec -1 If sec +1 A-cos B+cos what is the value of (A – B)?? %3D O no correct answer O 4 O 0.5 O 2

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Q: Angle a lies in quadrant II, and tan a = 2. Angle B lies in quadrant IV, and cos 3 = %3D What is the…

A: cos(α-β)=cosα cosβ+sinα sinβ

Q: A 2 (cos - i sin). B 2(cos + i sin ). Sm e 2(cos +'i sin- 0= tan COS D 2(cos i sin ). 5m

A: Given complex number lie in 3rd quaradant

Q: (a) 2(cos +i sin 플) (b) 3(cos + i sin E)

A: Solve for part (a), as follows: 2cosπ8+isinπ8=2122+2+i.122-2=2+2+i2-2=1.847759+0.765366i

Q: 1. Pythagorean Identity: 1 – cos (A)= 2. Reciprocal Identity: csc(A)= 3. Pythagorean Identity: 1+…

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Q: 4. If cos 20= -0.5 and sec 0 < 0, then where does 0 lie? A. I B. II C. II D. IV

A: Given: cos 2θ=-0.5 and sec θ&lt;0To obtain : θ lies in…

Q: question Given cos(a) = - and T/2 < a < T, find the exact value of cos(a/2).

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Q: Find (-/3 +i)25 O A. 27 2л 225 cos cos-+i sin- 3 В. cos-+i sin 3 6 C. None of the above. D. cos-+i…

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Q: 1. Which ratio corresponds to cos 0 ? adjacent side A) hypotenuse C) - a

A: Answer 1 We know that Cosθ=AdjacentHypotenuseHere.Adjacent=12Hypotenuse=rTherefore,Cosθ=12rOption A…

Q: d)(cos 30+isin 30)(cos 60-i sin 60) iuiu 20) (cos e +isin 0)

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Q: - Náme the quadrants in which an angle of measure 6 could lie when: a. cos 8 > 0 b. cos 0 0 b. sin…

A: I have solved all. Thanks.

Q: Find (-/5 +i)25 OA cos-+i sin 6. O B. None of the above. Oc. cos-+i sin 3 3. OD. cos +i sin 3 6 OE.…

A: We know that for the complex number z=a+bi, r = a2+b2 θ = tan-1ba Then we can write  z = r cos θ + i…

Q: x  is an acute angle. Find the value of  x  in degrees. cos ( x ) = 0.9 Write your answer as an…

A: Given: cos(x) = 0.9

Q: 3 = and cos a=- 3 such that 5' 5 Given that sin 0 = both 0 and a are in the same quadrant, without…

A: We will solve the three parts b,c,d by using geometric identities and formulas by checking value in…

Q: (a) State the trigonometric identity that relates sin? (0) to cos(20), and cos (0) to cos(20). (b)…

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Q: Solve - 4 cos () + 3 cos(a) + 1 = 0 The smallest non-negative solution is: The next smallest…

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Q: 30. cus 70 + i sin 70 A 7(cos 0 + i sin 0) B 7(cos 0 – i sin 6) C ( cos 0 + i sin 0 D cos 20 cos 50…

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Q: 20. If cos 0 = 0.2, then cos(0 + 1) = ? A. 0.2 B. -0.8 C. -0.2 D. 0.8

A: Given cosθ=0.2 We have to find the cosθ+π Since, π+θ lie in third quadrant Hence, cosπ+θ=−cosθ

Q: 5. (a) Find the exact value in radians: sin-1 (sin () 3 5. (b) Find the exact value: sin (cos"* (-)…

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Q: If (cos* a/cos? B) + (sin“ a/ sin B) = 1, then prove that (cos* B/ cos? a) + (sin? B/ sin? a) = 1 2

A: Given: cos4αcos2β+sin4αsin2β=1 To prove that  cos4βcos2α+sin2βsin2α=1

Q: (cos +isin)x (cos- 4 ,) × (cos +isin끙)×(cos- 8 +isin 24 + isin- 4 12 12 8

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Q: Find the value of the function: Guve the exact form of the answer (no decimal). Cos(sin^-1 (7/25)+…

A: Given information: cossin-1725+cos-135 Calculate the value of the given function. Here we use the…

Q: 36 with A in Quadrant III, and cos(B) = 85 3 with B in Quadrant I. Find cos(A + B). Give You are…

A: Given:           cos(A)=−3685, with A in Q III. and cos(B)=35, with B in Q I.

Q: 1-sin? x The expression + 2 cos² x is equivalent to cot2 x 01+ sin? O sin x 01+ cos? x cos4 COS ,2…

A: We have to solve the expression  1-sin2xcot2x + 2 cos2x.