2) Use the Sum and Difference formulas to evaluate the following expression cos (345°)

Q: Use the given conditions. sin(u) =5/13, pi/2< u < π (b) Find the exact values of  sin(u/2),…

A: The given trigonometric value is

Q: Use the Half-angle Formulas to find the exact value of the expression cos 112.5°. cos 112.5° = %3D

A: value =?

Q: 137 Use the appropriate compound angle formula in order to find the exact value for the ratio cos 12

A:

Q: Use the given triangles to evaluate the expression sin π/3 . cos π/4 - tan π/4. If necessary,…

A: Here the given graph as

Q: what is the exact value of cos (22.5*) using the half angle identites

A: The exact value of cos (22.5*) using the half angle identities

Q: Use an appropriate Half-Angle Formula to find the exact value of the expression. cos 8

A: Explained below

Q: Use an appropriate Half-Angle Formula to find the exact value of the expression. cos(5) 12.

A:

Q: Use the given information to find the exact value of the expression. cos θ = 15/17, θ lies in…

A: Answer(a)

Q: 8. and If sin a =- 17 cos ß = for a second-quadrant angle a and a third-quadrant angle ß, find the…

A: solution is given below..

Q: The value of ( cos 30 sin 60 de is 4

A:

Q: 4. Use an appropriate half angle identity to find the exact value of cos15°.

A:

Q: Given an acute angle Cosx=2/7, find the exact value of cos(x/2). (Use a half-angle formula)

A: As we know from the half angle formula; cosx2=±1+cosx2   Given; cosx=27

Q: Find the remaining trigonometric ratios of theta based on the given information. sin theta = 4/5 and…

A: It is given that sinθ=45                 because sinθ=oppositehypotenuse opposite side to θ=4…

Q: Use the double angle formula to find the exact value of 2 cos² ETOO 1

A:

Q: If tan 0 9 and P(0) is in QIII, what is the value of cos(20) ? 41 41 40 41

A:

Q: Use the sum-to-product formula to find the exact value: If cos 255° cos 195° VA then LA

A:

Q: What is the value of sin 30+ cos 30

A:

Q: Use a sum or difference formula to find the exact value of the following. TC sin CoS 15 COos 15

A:

Q: using the half-angle formulas.

A:

Q: Given tan(0) , then cos(0) 6 Determine the values of a and b. [ Select ] a = b = [Select]

A: This

Q: Find the exact values. (a) tan(pie/3)            (b)sin(7pie/6)                (c)sec(5pie/3)

A:

Q: 3) Use the sum, difference, double or half-angle formulas to find the exact value of cos(sin-1+…

A:

Q: 4. Determine the sign (+ or -) a. cos 143 degree, b. tan 192 degree. c. tna (4 pi/5)

A: Explanation is given below..

Q: Use an appropriate Half-Angle Formula to find the exact value of the expression. cos(112.5°)

A: Solving the problem by half angle formula.

Q: Simplify the expression by first substituting values from the table of exact values and then…

A:

Q: Use a sum or difference formula to find the exact value of the following. sin cos 15 10 + cos 10 sin…

A: given,

Q: Use a sum or difference formula to find the exact value of the following. 6T TC Cos 42 TC cos + sin-…

A: Solve equation

Q: Use a sum or difference formula to find the exact value of the following. TC Cos cos sin - 5 15 15

A:

Q: If sin 0 + cose =p and sec 0 + cosece = q,show that q (,? – 1) = 2p

A:

Q: Simplify the expression by first substituting values from the table of exact values and then…

A: Trigonometry Question

Q: Simplify the expression by using a double-angle formula. 2 cos 27°-1

A:

Q: sin- cos 3

A:

Q: If 180 is less than or equal to theta and greater than or equal to 270 degrees and cos (theta)=-2/9…

A: Here given as

Q: Use the given conditions to find the exact values of sin(2u), cos(2u), and tan(2u) using the…

A:

Q: Given that cos θ = − 3/5 and that θ is in QIII, find the exact values of sin θ, tan θ, csc θ, sec θ,…

A: As cos θ = (Base) / (Hypotenuse) = -3 /5. Cos θ is negative in quadrant III. Find the perpendicular…

Q: Through the simplification of The expression cor(sin Which of the following triangles will be used…

A:

Q: Through the simplification of The expression tan(sec-1x) Which of the following triangles will be…

A: We use the Pythagoras Theorem on right angled triangle.

Q: Use the formula for the cosine of the difference of two angles to find the exact value of expression…

A: We have formula, cosA-B=cosA cosB+sinA sinB. Using above formula, we will evaluate the expression…

Q: Find the exact values: a.   sin(2pi/3)+sin(5pi/4)   b.  sin (23pi/12)

A: Given  a) sin2π3+sin5π4 b) sin23π12 To find the exact values.

Q: Use the given conditions to find the exact values of sin(2u),cos(2u),and tan(2u)using the…

A:

Q: Use the given information tan α = 4/3, 180° < α < 270° to find the exact value of the…

A: To Determine: use the given information to find the exact value of the following  a)  sinα2   b)…

Q: Through the simplification of The expression sec(tan Which of the following triangles will be used…

A:

Q: Use a half-angle formula or sum and difference formula to find the exact value of the expression.…

A:

Q: Find the exact value of the expression using an appropriate half-angle formula. Simplify tan 5pi/8

A: The given expression,    tan5π8

Q: Given tan θ = −54 and cos θ > 0, find sin θ and sec θ

A: Given that, tan θ = −5/4   and  cos θ > 0 Then θ will lie in the 4th quadrant where cos θ > 0…

Q: 4. Use a half-angle identity to find the exact value of each expression. a. sin (165°) b. tan 157.5°…

A:

Q: Use the Half-Angle Formula to determine cos(105°)

A:

Q: Find the exact value of cos 240' using the compound angle formula. 1 ,and A is in the fourth…

A: Solution : a) We have to find out the exact value of cos240° using the compound angle formula. b)…

Q: 1. Using the half-angle formula, simplify the following expression. sin 48° 1 + cos 48°

A: