Find, the value Cos 20, when: * .cose = 12/13

Q: Which expression is equal to cos(6t)?

A: Recall:  cos(2t)=cos2(t)-sin2(t)     Given,   cos(6t)

Q: Use addition formulas and the values of sin(ø) and cos(ø) for ø=pi/3 , pi/4 to compute sin(pi/12)…

A: Use formulae: also, make use of:

Q: Find the exact value of the expression cos(arctan 3/4).

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Q: 6) Evaluate the following without a calculator arccos (sin (-)

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Q: Evaluate: 4 cos“ 0 d0, correct to 4 significant figures

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Q: Find the exact value of cos

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Q: Find the exact value of cos by using a sum or difference formula. 12

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Q: Find he principal valeier of the folousag (@) tanG) (6) Cos ) co tan 62) चिम्य ख

A: Given: tan-1-1, cos-112, tan-13, cos-1-12 we know that tan-1-x=-tan-1x…

Q: Find cos(θ), if sec(θ)=−2.  Round your answer to four decimal places.

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Q: Use a calculator to approximate each value to four decimal places.             cos 10

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Q: Find Cos asinsa da Bubstitute

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Q: 4. Find the exact value. Do not use a calculator. cos - +tan 3 3

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Q: Evaluate without using a calculator or tables. cos (arctan   3)

A: Concept: The trigonometric ratio are ratios, sine, cosine, tangent, cosecant, secant and cotangent.…

Q: Please show how to draw this on the quadrant.

A: Given:

Q: Given that csc ⁡ Θ = 3.025, what is cos ⁡ Θ? Round your answer to 3 decimal places.

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Q: What is the exact value of cos-(165°)?

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Q: Find the exact value, without a calculator. 9, 7n sin tan 12 Cos [ ? ] + /[ Enter

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Q: Find the exact value by using a difference identity. tan 195°

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Q: Complete the following table using exact values. (If an answer is undefined, enter UNDEFINED.)…

A: It is known that  csc x = 1/sin x

Q: Evaluate the expression below. cos(arcsin4/5  − arctan 6)

A:

Q: Find the exact value using a sum or difference identity. cos (-300°) ?

A: We can find the exact answer as below.

Q: If cosA=(sqrt5)/5 with A in Q1 and tanB=3/7 with B in Q1, find cos(A+B).

A: If cosA=(sqrt5)/5 with A  and tanB=3/7 with B , find cos(A+B)

Q: Find the exact value, without a calculator. sin tan 12 引ルレ 7Tn 1116 [?]+ V[ ] コー」 Enter

A: Given: tan7π12 The objective is to find the exact value.

Q: Find given - cosx sinz

A:

Q: Find the exact value. Must show a diagram. cos sin-(-)]

A: We know that: Sin2θ+Cos2θ=1And,CosCos-1(θ)=θ.

Q: Find the exact value of cos 285° by using sum or difference formula

A: Given : cos285°

Q: find the Exact value of Cos(165degrees)

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Q: value

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Q: If csc(z) = 6, for 90° < x < 180°, then sin com ) - [ tan) - COS

A: First of all find the value of x, then find the given

Q: B) If Tan0 = 20 find without using tables the values of (cose, cot0 and csce) 15

A: Given that  tanθ=2015 To find the values of cosθ, cotθ, cscθ.

Q: Use an Addition or Subtraction Formula to find the exact value of the expression. cos(165°)

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Q: Use a cofunction to write an expression equal to cos 12 is

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Q: What is the exact value of the expression cos(arctan(7/8))

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Q: Use Identities to find the exact value. 19) cos 165°

A: cos(A+B)=cos(A) cos(B)-sin(A)sin(B)

Q: Find the exact value of the expression. arctan(tan(10π/19)

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Q: Given: cosg= -, sin x = - 12, e is in the third quadrant, and x is in the fourth quadrant; evaluate…

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Q: Evaluate without using a calculator or tables. cos (arctan   2)

A: Evaluate: costan-12

Q: Find the exact value. 1. cos165°

A: Exact value of  Cos(165) = -0.965925826

Q: Find cos 67° correct to four decimal places by using a calculator.

A: cos67°

Q: What's the exact value of cos(15degrees)

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Q: Evaluate without using a calculator. tan(cos−1 9/15)

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Q: How many radians are there between the hands of a clock at eight o'çlock?

A: Query- How many radians are there between the hands of a clock at eight o'clock. Answer-  As There…

Q: Find the value of the expression (cos2230-sin2670)

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Q: Evaluate without using a calculator.       tan ( cos  -1 12/13)

A: Let us consider that cosθ=1213 On using a right angled triangle, we value of tanθ as In right…

Q: If sinA = 4/5 with A in QII, and sin B= -3/5 with B in QIV, find cos (A-B)

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Q: Find the exact value of the expression given below. cos(- 105°)

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Q: Use a calculator to approximate cos 45 to four decimal places.

A: Consider the given trigonometric term cos45