Hence or otherwise find the exact value of 2 sin 285 cos 45

Q: Find the exact value of the expression. 15 cos tan 8 12 Cos 13

A: Given expression costan-1158-cos-11213. The objective is to find the exact value of the expression.

Q: 197 Determine cos(sin c) if c = 9 radians. Enter an exact answer in terms of a. 3

A:

Q: Find the exact value of cos 195° + cos 105°

A:

Q: Find the exact value of 5cos 3 pi / 2 + 3 sin pi/2

A:

Q: Find cos 0 if cot 0 =4/3 and sin 0 < 0.

A: Also given that sinθ<0, this means sinθ is negative. So, cotθ=cosθ/sinθ means cosθ also have to…

Q: If cos(85°) = sin(0) and 0° < 0 < 90°, then 0 = degrees

A:

Q: If sin 0 = and cos 0= 12 9. %3D 15 15 what is the tan 0? tan 0 Report your answer in simplest form.…

A:

Q: 6. If sin a = -1, what is cos a?

A: The trigonometric functions include 6 functions. The trigonometric terms can be calculated using the…

Q: Find the exact value of cos(83°) cos(23°) + sin(83°) sin(23°)

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: -1 Determine sin=(cos a) Provide your answer be

A: cosa can be written as sin(pi/2-a) sin and sin inverse get canceled see attached image

Q: Find the exact value of cos 70° cos 40° + sin 70° sin 40°.

A:

Q: 2 sin 105° cos105°

A: consider the trigonometric function  2sin105°cos105° The double angle sine formula is defined as,…

Q: Find cos (20) if sin 0= 8. cos 0>0 17

A: Given : sin θ=817Opposite side to θ is 8hypotenuse is 17 Now use Pythagorean theorem to find the…

Q: 1. cos(105°) 2. sin(15°)   find the exact values, fully reduced if possible

A: 1. By using the identity we get

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

A:

Q: Find the exact value of (sin 14°)2 + (cos 14°)2 - 3

A: Given expression: sin 14∘2+cos 14∘2-3 The objective is to find the exact value of sin 14∘2+cos…

Q: If 0° < 0 < 90° and sin 0 = find cos 20.

A: Here the angle lies in the first quadrant and value of sin is given. So to find the Value of cos…

Q: Find the exact value of the expression. Not a decimal.   cos^-1 (sin 7Pi/6)

A:

Q: If the sin 30⁰ is 1/2, then the cos ____⁰=_____.

A: Use the property of sin(90°-thetha)=cos(thetha)

Q: find the exact value of cos 227 cos 167 + sin 227 sin 167 by using the formula for cos (a-b).

A: Solution :       We have to find the exact value by using the formula for cos(a - b)  = ? Now, Given…

Q: If cos 3A + sin A = 0, find the value of A. Show complete solution. Answer should not be negative.

A:

Q: If sin 0 = and 0 <os (a) determine the EXACT value of cos 20 (b) determine the EXACT value of sin().

A:

Q: 4. Find the exact value of sec (585°). 5. Find the exact value of (sin 150°)? + (cos 150°)².

A:

Q: Find the exact value of cos(155°)cos(35°) + sin(155°)sin(35°). O A. -2

A: cos155ocos350+sin1550sin350 =?

Q: 3n 8 If tan 0= find the exact value of each of the following. 2 cos (20)

A:

Q: Find the value of cos 1- + 2 sin 1/2

A: value=?

Q: Find the exact value of 23л sin 30 17 237 17 COS + cos sin 30 30 30

A: Let's find.

Q: verify the trigonometric identity below. 1+ sin(2θ)+(sin(θ)+cos(θ))^2

A: Given data 1+sin2θ=sinθ+cosθ2

Q: Find the exact value of the expression. sin 25° cos 35° + cos 25° sin 35° O 1 O 5 12

A:

Q: Find cos 20 if sin 0 = cos 20

A:

Q: If sin18 = 0.309, determine the value of cos 72

A:

Q: Use the facts that cos (π/6)=((√3)/2) and sin (π/6)=1/2 to find the exact value of tan ( π/12)

A: Given: -

Q: 5n 25) cos 12 + sin sin 12 12 cos 12

A:

Q: 8 tan 0 = 3' find the exact value of each of the following. a) sin (20) (b) cos (20) (c) sin , (d)…

A:

Q: Determine the exact value of cos 60° x sin 30°.

A:

Q: Find the exact values of cos 0 if sin 0 * and sec 0 > 0 13

A: Given:sin θ =-513 and sec θ &gt;0

Q: What is the exact value of cos(495°)? 21 DI

A: I have used the trigonometry ratio

Q: 5. Is the equation cos 0 – sin 0 = 1 an identity? If so, verify it. If not, explain why.

A: We have to check

Q: Find cos ⁡(2θ) if sin (θ) = 2/13.

A:

Q: 1. Suppose that cos = 0.68. What is the value of sin(=)? Explain.

A: First we assume cos(α)=0.68cos(α)= 68100 we know that  cos(θ)=adjacenthypotenuseLets mark the…

Q: Write cos 0 cot 0 in terms of sin 0 and cos 0

A: The given trigonometric expression is: cos θ cot θ   Solution is below:

Q: What is cos10∘cos8∘−sin10∘sin8∘ equal to?

A: To solve the problem we must know about sum and difference formula of sinθ  and cosθ.  We have to…

Q: Give the exact value of cos 3 (플),

A: Answer is Cos2x/3= -1/2.

Q: Find the exact value of the expression. cos(160°) cos(25°) + sin(160°) sin(25°)

A:

Q: If 0° < 0 < 90° and sin 0 = , 3 find cos 20.

A:

Q: State the exact value of cos π 6

A: We have to state the exact value of  cos π6.

Q: and sin(0) < 0, what is sin(0)? 13 If cos 0

A:

Q: What is sin(17) equal to the cos of?

A:

Q: Use exact values to show that the following is true. sin 60° = 2 sin 30° cos 30°

A: We have to show

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.