N. Evaluate without using calculator. a. -2 sin 52.5° sin 97.5° b. cos 255° cos 195°

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

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

Q: Evaluate the expression under the given conditions. tan(? + ?); cos(?) = − 1/3, ? in Quadrant III,…

A: cos(x) = -1/3   , x in  iii quadrant    Thus, as cos(109.4712°) = -1/3  Hence, in third quadrant, it…

Q: Use a calculator to find an approximate value (in radians) of the expression rounded to five decimal…

A:

Q: 10. Use a half angle formula to determine the exact value of tan

A:

Q: Use an Addition or Subtraction Formula to simplify the equation. cos(?) cos(2?) + sin(?) sin(2?) =…

A: cos(x)cos(2x)+sin(x)sin(2x)=22[Formula cos(A)cos(B)+sin(A)sin(B)=cos(A-B)…

Q: Use a calculator to find the value of the acute angle, 0, to the nearest degree. cos 0 = 0.6833 0x°…

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Q: Use a calculator to give the value to the nearest degree. e = cos-1(-0.9397) %3D O-20° O 157° O 162°…

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Q: 20 B) If Tan0 , find without using tables the values of (cose, cot0 and csce) %3D 15

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Q: 25. In which quadrant would the terminal ray of an angle lie if it had a positive tangent and a…

A: Properties Quadrant I: cosine,tangent and sine are positive. Quadrant II: cosine and tangent are…

Q: Use a calculator to evaluate the expression in both rac 7. tan-(-1.7) 8. cos- 0.24

A: we can find the value of the given inverse trigonometric functions by applying directly to the…

Q: without using the calculator evaluate : sin ϴ, cos ϴ, tan ϴ of  a) 450° b) 10pi/3

A: Calculation:a)Compute the value of sin (450°) as follows.

Q: Find the exact value of the expression  sin 165

A: In this question we will use basic of calculus i.e use of trigonometric formulas.  We will use the…

Q: Use a calculator to find the value to four decimal places: a. sinπ/4   b. csc 1.5.

A:

Q: 7. State an equivalent expression for sin in terms of the related acute angle.

A:

Q: Find an angle θ with 0 degrees < θ < 360 degrees that has the same: Sine as 40 degrees: θ =…

A: To find the angle theta in (0, 360°) having same as sin(40°) and cos(40°)

Q: What is the angle between 0 and 2n in radians that is coterminal with the angle 11r/4 in radians? O…

A: Here we have to find co-terminal  with the angle 11π/4 between 0 and 2π as shown below

Q: Using your calculator, enter the decimal value for each. Round to the nearest ten - thousandth 1)…

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Q: Write an algebraic expression that is equivalent to the given expression. sin(arccos(x))

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Q: Find sin 75° without using a calculator. [? (V2+ V])

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Q: Simplify cos[arctan( -). -12/13 5/13 12/13

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Q: Use a calculator to find the value of the following expression rounded to two decimal places. cos 7…

A: Given that an inverse cosine function and we need to fine the angle in radian.

Q: without using the calculator evaluate : sin ϴ, cos ϴ, tan ϴ of  a) 450° b) 10?/3

A: Since, 360 degrees + thita lies in first quadrant, so values of sine, cos and tan is positive as…

Q: 4. State an equivalent expression for sec in terms of the related acute angle.

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Q: Evaluate without using a calculator.     cos    -1 ( cos 7pi/4)

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Q: Find the exact value of the expression sin 165°

A: *to find:- exact value of sin165°.

Q: EValuate:- (sin?G coszoldo

A: On solving this we will get:-

Q: Use the cofunction identities to evaluate the expression without the aid of a calculator. sin? 39° +…

A: Given data is : sin239∘+sin251∘ To find  the value of sin239∘+sin251∘ without using calculator. Use…

Q: Evaluate the sine, cosine, and tangent of the angle without using a calculator. (If an answer is…

A:

Q: Simplify without a calculator: 2 sin(15°)cos(15°) I| ||

A: answer = ?

Q: New Give the answer to the trig function and the quadrant where the angle terminates. sin- 6. -

A:

Q: Find an angle θθwith 0∘< θ < 360∘that has the same: Sine as 40∘: θ = ___ degrees Cosine as 40∘: θ…

A: We need to find the same angle between 00&lt;θ&lt;3600.

Q: Which of the following are the values of sinθ and cosθ if the terminal side of angle θ intersects…

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Q: Evaluate the expression without using a calculator, and write your answers in radians. sin rad

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Q: A 11. Convert from radians to degrees. UseT= 3.14, Round your answer to the nearest tenth of a…

A: Explanation of the answer is as follows

Q: Use a calculator to find the value of the acute angle, 0, to the nearest degree. sin 0 = 0.6997 e=…

A:

Q: Evaluate the expression under the given conditions. cos(2?); sin(?) = − 7/25, ? in Quadrant III

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Q: Evaluate without using a calculator.     cos    -1 ( cos 7pi/6)

A: Given cos-1cos7π6

Q: Use a calculator to find the value of the acute angle, 0, to the nearest degree. sin 0 = 0.6997 0 °…

A:

Q: Evaluate without a calculator:

A: The unidentified measure of an angle of a right triangle can be evaluated with the help of inverse…

Q: Use a calculator to find the value of the following expression rounded to two decimal places.…

A:

Q: Determine the value of angle A that corresponds to cos A 0.69466. Round the answer to the nearest…

A: We determine the value of the angle A corresponds to cosA= 0.69466 by using calculator.

Q: 1) Convert degrees to radians. radians degrees x 180 Let pi = a) 35° = %3D Answer = b) 125° = %3D…

A:

Q: 7. Write an algebraic expression that is equivalent to the expression: tan( arccOS

A: We have to write an algebraic expression that is equivalent to the expression…

Q: 10. Use a half angle formula to determine the exact value of tan (#).

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Q: Use a calculator to find the measure of angle 0 to the nearest degree if cos 0 = 0.5878.

A: Given:cosθ=0.5878

Q: Evaluate without using a calculator, leaving answers in exact form. sin(-) TT (a) (b) cos(-) TT COS…

A: Find (a)

Q: Use a calculator to find the following values: sin(0.75) = %3D cos(0.75) = tan(0.75) =

A: