Evaluate cos sin giving an exact answer.

Q: Cos

A: According to the guideline we should have been able to solve only one question at a time

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Q: 1) cos-105°

A: As per rule of bartleby we can solve only one question at a time and we can solve only three subpart…

Q: Use your calculator to evaluate cos '(0.47) to at least 3 decimal places. Give the answer in…

A: Here I am attaching image so that you understand each and every step.

Q: Evaluate without using a calculator.      cos  (cos    -1 1/2)

A: given: coscos-112 we know that coscos-1x=x

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A: ANSWER:

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A: tan(cos-1(x)) Let cos-1(x) =  θ         .....................(1)    =>     x = cos θ    =>…

Q: Use the Cofunction Theorem to fill in the blank so that the expression becomes a true statement. sin…

A: Now,          sin60°

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A: We use the identity sin-1x+cos-1x=π/2

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A: Given that: cos-1sin7π6

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A: 240° is in third quadrant, where sine is negative. And 240° can be written as (180+60)°.…

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A: Since,it is known that the value of sin-1 is taken from -π2 to π2.Also,in the first quadrant all the…

Q: Use the Cofunction Theorem to fill in the blank so that the expression becomes a true statement. sin…

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Q: find the exact value of sin 300°.

A: topic - trigonometric values Sin (360-x) =-sin(x) where x is angle in degrees

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Q: Evaluate without using a calculator.     cos    -1 ( cos 120 degree )

A: We hvae to calculate the value of - y = cos-1(cos120°)We can write it as -Using trigonometric…

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

A: We can find the exact answer as below.

Q: Use your calculator to evaluate cos (0.85) to at least 3 decimal places. Give the answer in radians.

A: To use calculator to evaluate cos-10.85 to atleast 3 decimal places.

Q: Compute the exact value of sin(195 °)

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

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

Q: Use the Cofunction Theorem to fill in the blank so that the expression becomes a true statement. sin…

A: Given sin (150)

Q: Evaluate sin(cos^−1(5/13)), giving your answer as an exact value (no decimals)

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A: Use trigonometric identity

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A: Given: cos-114x=tan-13x we know that cos-1y=tan-11-y2y similarly,…

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A: split PI/12 into two angles where the their trigonometric functions are known.

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A: Verify the identity.

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Q: Find the exact value of the expression sin2 π/2 + cos π. Do not use a calculator.

A: Find the exact value of the expression sin2 π/2 + cos π.