give the exact value of cosine 135 degrees

Q: Without using a calculator, five the exact value of cosine 135 degrees

A:

Q: If the sine of an angle is .6691, Find the angle

A: Let the angle be 'x' sin(x)=0.6691

Q: The terminal ray of angle 0 in standard position passes through the point (-0.8, -0.6) on the unit…

A: Theta= 216.87 degree  See the calculation below

Q: If the sine of an angle is 817, what is the cosine of the angle's complement?

A: Given that complementary angle are those angle whose sum is 90 degree

Q: Use a half-angle formula to find the exact value of the expression sin 105°

A: We have given the expression; sin 105° We know the half-angle formula is;

Q: Use the half angle identify to evaluate EXACTLY: Tan67.5 degrees

A: Let x = 135 degree , then x/2 =67.5 Use half angle identity : tan(x/2)= (1-cos x)/sinxThen plug…

Q: Use a half-angle formula to find the exact value of the expression sin 15°.

A: Consider the following formula:…

Q: Draw 135 degree in standard position, locate a convenient point on the terminal side, andthen find…

A: For above question we have to draw angle 135°. We Start from positive x axis and go in anti…

Q: Use Half-angle Formulas to find the exact value of each expression;

A: We know that, from half angle formula tanθ=2tanθ21-tan2θ2       Let us consider θ2=7π8⇒θ=7π4.…

Q: 55.2 6.3 니2.2% a

A: We use sine law

Q: Use Half-angle Formulas to find the exact value of each expression;

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Q: Use double- and half-angle formulas to find the exact value of the expression tan(π/12).

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Q: Use a reference angle to write cos(260∘) in terms of the cosine of a positive acute angle.

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Q: angle

A: In-order to determine the height of the gage blocks, Height of Gage Blocks (units are the same as…

Q: Find another angle phi between 0 degrees and 360 degrees that has the same cosine as 69 degrees.…

A: Refer to the question we need to find the angle  0 < phi < 360 that has the same cosine as 69…

Q: Find the values of the six trigonometric functions for angle 0

A: here there are six trigonometric functions  P=perpendicular, H= hypotenuse , B= base  sin 00=PHcos…

Q: A 85-foot-tall tree casts a shadow 36 feet long. Find the angle of elevation of the sun to the…

A: The height of the tree is = 85 foot The length of the shadow is = 36 The angle of elevation of the…

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

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

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Q: Find the value of the Sine, Cosine, Cosecant and Secant, if 0= 225°. What is the reference angle of…

A: Given unit circle with angle θ=225°

Q: If you are given a point on the terminal side of angle 6, explain how to find sin 6.

A: Consider the provided information, Let we have a point x,y.

Q: 5. If sin 47°=.731, name another angle in the same quadrant that has the same sine value.

A: It is not possible.

Q: Find an angle 0 with 0° < 0 < 360° that has the same: Sine as 50°: 0 - degrees Cosine as 50°: 0 =…

A:

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

A:

Q: Find another angle Phi between 0 degrees and 360 degrees that has the same cosine as 69 degrees. Do…

A: Given

Q: Find another angle theta between 0 degrees and 360 degrees that has the same cosine as 245 degrees.…

A:

Q: Find the exact values of the six trigonometric functions of the angle. 570°

A:

Q: Use Half-angle Formulas to find the exact value of each expression; sin 22.5°

A:

Q: determine the height of gage blocks required to set an angle of 17 degrees 22' on a 5" sine plate.…

A: Given,           The height of gage blocks required to set an angle of 17 degrees 22' on a 5" sine…

Q: Determine the height of  gage blocks required to set an angle of 17Degrees22" on a 5" sine plate.…

A: The length of the sine plate is: 5 inches The angle to be set is: 17°22'' 17 degrees 22 seconds

Q: Find the exact value of the sine of an angle 0 in standard position if the point (13,-84) is on its…

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Q: What is the reference angle of Theta if Theta = -382.1 degrees?

A:

Q: Find an angle 0 with 0° < 0 < 360° that has the same: Sine as 70°: 0 = degrees Cosine as 70°: 0 =…

A:

Q: Use a reference angle to write sin(5π/4) in terms of the sine of a positive acute angle.

A: Given

Q: Find an angle 0 with 0° <0 < 360° that has the same: Sine as 80°: 0 = 100 degrees Cosine as 80°: 0 =…

A:

Q: Please find the exact value of cos 165 degrees

A: Find the value of cos(165°).

Q: If csc0 = 5/2, find the exact value of the remaining trigonometric values of angle 0

A:

Q: a tree casts a shadow of 10 meters when the angle of elevation of the sun is 65 degrees. find the…

A: Use height and distance concept

Q: If sin0=, then what is the value of cose 95

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Q: Perpendicular =3.  Base =4. Find cot theta

A:

Q: tan θ = 26.0307.Use a calculator to find the value of the acute angle θ to the nearest degree.

A: Consider the provided expression, tanθ=26.0307 Use a calculator to find the value of the acute angle…

Q: Use the Difference Formula for Cosines to Find the Exact Value of 15°.

A: We have to find  the value of cos15°. recall the Cosine-difference formula  cos ⁡ ( α − β ) = cos ⁡…

Q: Use a half-angle formula to find cos 75 degree.

A: We have to find exact value of cos 75° by using half angle formula. We know half angle formula for…

Q: Use a half-angle formula to find sin 22.5 degree

A:

Q: Convert from degrees to radians. 110 degrees = %3D

A:

Q: give the exact value of sine 60 degrees

A: sin(60°) = √3/2

Q: Find an angle 0 with 0° < 0 < 360° that has the same: Sine as 30°: 0 = degrees %3D Cosine as 30°: 0…

A: Sin is positive in first and second quadrant. sin x=sin(π-x)sin 30=sin(180-30)          =sin…

Q: If the sine of an angle is 17' 8 what is the cosine of the angle's complement?

A: Two angles are said to be compliment angles if they add up to 90 degrees. Let x be the given angle,…

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.