In Exercises 39–46, use a half-angle formula to find the exact value of each expression. 39. sin 15° 40. cos 22.5° 41. cos 157.5° 42. sin 105° 43. tan 75° 44. tan 112.5° 45. tan 8. 46. tan 8

Q: Find the exact value using half-angle formulas. 7 sin (?/8)

A:

Q: What is the smallest positive degree angle measure equivalent to tan − 1 ⁡ ( 0.724 ) ?

A: Given :tan-1  0.724

Q: The tangent of an angle satisifies tan(θ ) = 10. 1. Which quadrant could θ  lie in? Explain how you…

A: Topic:- trigonometry

Q: An angle of measure π6 intersects the unit circle at point (32, 12). What is the exact value of…

A:

Q: In Exercises 39–42, use a calculator to find the value of the acute angle 0 in radians, rounded to…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: What is an equivalent expression of Sin 21 in terms of the reference an (related acute angle)? a)…

A: To write equivalent expression for sin5π6

Q: 1. Write a list of angle degree measurements between 0° and 180° whose sin value can most easily be…

A:

Q: 22. The angle of elevation to the top of a building is found to be 50° from the ground at a distance…

A:

Q: Use a half-angle formula to find the exact value of the expression tan(7π/8).

A: we have to use the half angle formula to find the exact value of the expression tan7π8. tan…

Q: In Exercises 35–38, use a calculator to find the value of the acute angle 0 to the nearest degree.…

A:

Q: Determine the exact value of tan(), by using a compound angle formula. Show all work for full marks.

A: It is asked to determine the exact value of By using compound angle formula. A compound angle is…

Q: Most dictionaries define acute angles and obtuse angles in terms of degrees. Choose the option that…

A:

Q: Complete the identi sin e sin e 1+ sin e 1- sin e O sin e tan e O sec e csc e O -2 tan e O 1+ cote

A:

Q: Find the exact value using half-angle formulas. 7 cos(7π/8)

A: Recall the following facts.

Q: If e is an angle in standard position and its terminal side passes through the point (-4,1), find…

A: Topic = Angles

Q: What is the reference angle for -238°?

A: We have to find the reference angle of - 238° Then ,  -238° + 360° = 122°  It is II quadrant . So ,…

Q: 16. If the angle of elevation of the sun is 60 15' when a building casts a shadow of 20 ft., what is…

A: Solution is given below:

Q: use a half-angle formula to find sin(105degrees).  Simplify your answer completely.

A:

Q: Given that the point (-160, 36) is on the terminal side of an angle, θ , find the exact value of csc…

A:

Q: Use a half-angle formula to find the exact value of the expression tan 112.5°

A: We have to find exact value of the expression tan112.5∘ using a half-angle formula. Explanation:…

Q: Convert an angle of 195° to radians. Give an exact answer (leave it in terms of n).

A: For degree to radian we multiply by π180 For radian to degree we multiply by 180π

Q: In Exercises 25-32, write each expression as the sine, cosine, or tangent of an angle. Then find the…

A:

Q: 8T tan 3.

A: using properties of tanx

Q: The radius of a circle is 2. What is the measure, in radians, of the angle subtended by an arc 5 147…

A:

Q: Use a reference angle to find the exact value of tan 4π/3.

A: solution:- Use a reference angle to find the exact value of tan 4π/3.

Q: Find the exact value of s in L-7,7) by first finding the reference angle along with 45-45-90…

A:

Q: Find the angle, in degrees between 0 and 360°, which intersects the unit circle at the point (-,-).…

A:

Q: How do I draw a diagram to determine the exact value for cot(5pi/4)

A:

Q: Which set of radian angle measures is equivalent to sin−1⁡(−12)?

A: The maximum value of sin(x) =1 The minimum value of sin(x) = -1 The function sin(x) lies between -1…

Q: What angle between 0 and 2pi radians has its cosine equal to 1/2?

A:

Q: What is the value of cos 0 if P(-5, 12) is on the terminal side of an angle 0 in standard position?…

A:

Q: Use an appropriate Half-Angle Formula to find the exact value of the expression. tan(22.5°)

A:

Q: 1 point Find all 6 trig ratios for angle A 25m 9m B 16m sin A = 16/25, cos A = 9/25, tan A = 16/9,…

A: We have to find trigonometric ratio.

Q: What is a trigonometric value equal 12 to ? 15

A: The given figure is:

Q: 2. REPRESENT - Use reference angles to find the exact trig value listed below. a. sin 135° b. sec *

A: According to our company's guidelines I can only answer first question since you have asked multiple…

Q: What’s the smallest positive degree angle measure equivalent to sin^-1(0.391)?

A: sin^-1(0.391) = 0.4017

Q: 5% . Convert What are the sine, cosine and tangent of the angle radians to degrees. Which quadrant…

A: To convert the given radian angle into degrees.

Q: Without a calculator, give a Q3 angle for θ that satisfies tanθ = √3/3

A: Given,          tanθ=33

Q: If the terminal arm of an angle, x, in standard position passes through the point (-a, -2a) where a…

A:

Q: In right ∆POV, Angles P and V are the acute angles. If sin P = √21/11, determine tan P.     √21/10…

A:

Q: 7 Given a point on the terminal arm (-2, -3), determine the exact expressions for the six…

A:

Q: A point (3, - 1) on the terminal side of an angle 0 is given. Find the exact value of csc 0. 2/10…

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: Find the exact value of s in [-7,7) by first finding the reference angle along with 45-45-90…

A: We know that, the 45°-45°-90° triangles can be solved using the 1:1: √2 ratio method. i.e, the…

Q: The radian measure of an angle of -204 degrees is Submit Question

A:

Q: The length of an arc in a circle of radius r, subtended by an angle theta is given by s=rtheta Where…

A: Let the letter s symbolize the length of an arc, which is called arc length.An arc "subtends" an…

Q: Find exact value of cot 22.5° using half-angle formula

A: Givencot(22.5°)