1. If 270° < 0 < 360° and cos 0 = , find cos 20. 15 17 225 一站 17 225 104 225 104 225

Q: 16. If 90° < 0 < 180° and sin 0 = 2, find cos 20. ㅇ- ○一對 49 ㅇ O

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Q: If 90° < 0 < 180° and sin 0 = 2, find cos 20. 8 49 8 49

A: It is given that, 90°&lt;θ&lt;180° , and sinθ=27,  we have to find cos2θ=?

Q: Given 0° < 0 < 360°, solve cos? 0 – 1 = 0. %3D -

A: Given 0≤θ&lt;360° To solve, cos2θ-1=0

Q: If P (0) is in quadrant IV and cos(0) then the exact value of tan 13 is... 3/8 2/3 3/2 3/2 2/3

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Q: Determine the exact value of cos(120)° V3 2

A: The given question is from the trigonometry and can be solved as shown below.

Q: 14. What is cos 9n ? а. О b. 1 с. -1 d. 00

A: The angle 9π is obtained after 8 and half rotations.

Q: 3. If 0° < 0< 90° and sin e = , find cos 20. 50 81 56 81 81

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Q: Solve the following problems. 'ind the value of cos 15°. Further show that cos 15 < 0. Conclude that…

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Q: 9. Given that cos 0 =, what is sin 20, if 0 <0 < /? 12 a. 16 25 25 24 25 25 b. d.

A: Given query is to find the value indicated trigonometric function.

Q: If tan 0 9 and P(0) is in QIII, what is the value of cos(20) ? 41 41 40 41

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Q: 4. If 90° < 0 < 180° and cos O , find cos 20. 25 7 25 ㅇ 16 25 16 25

A: Given: 90°&lt;θ&lt;180° cosθ=-35 To find: cos2θ We know that, cos2θ=2cos2θ-1             Also, we…

Q: 5. If 90° < 0 < 180° and cos 0 ·유, find sin 20. 35 37 - 420 1369 840 1369 420 1369 840 1369

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Q: If sin A lind cos 2A

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Q: 10. If 0° < 0 < 90° and sin 0 = , find cos 20. 9 25 14 25 18 O 25

A: The solution is given below. .

Q: 29. The solutions to the equation 2 cos? 0 =1, - SO ST, are 土工,土 4 4 OI 31 57I 77 4' 4' 4'4 O +1 + 4

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Q: 5. If 90° < 0 < 180° and cos 0 = — 1, find cos 20. ㅇ 곯 ○ 16 25 0-곯 ㅇ

A: Given that,

Q: Given cos(8): = B 5 and the terminal side of 8 lies on the fourth quadrant. What is the value of sin…

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Q: 7. Use the table on page 311 or a scientific calculator to complete the statements. b. cos 57° e.…

A: To find sin(240) in scientific calculator first set the calculator to degree mode and type sin(24)…

Q: Given cos(8)= - 5 m<8<³ 2 for π<8<- then tan(0) =

A: We can find the answer as below.

Q: 5. If 90° <0 < 180° and sin0 , find cos 20.

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Q: 3 13. Find cot 0, given that cos0=-and 0 is in QII. 5 3 a.- 4 b.- 4 3 C. 4 d.

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Q: Determine the exact value of 2 sincos cos 12 12

A: Given query is to find the exact value of the expression.

Q: 2) If Sin A= 3/5 Then Find the value of Cos 2A O 24/25 O ((24)/25 7/25 O (-7)/25

A: Given: sinA=35cos2A=?

Q: 9. What is the exact value of cos(a - B) if sin a = 12 and sin B = and a is in quadrant I while B is…

A: Given that sinα=1213 , sinβ=725 α lies in first quadrant and βin second quadrant. We have to find…

Q: If sin A = -3/5 and cos A > 0 and cos B = 5/13 and sin B < 0, evaluate tan (A+ B ). O -63/16 O…

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Q: If tan 0 = and cot ß = - for 0 in Quadrant Il and B in Quadrant II, find cos(0 – B). %3D 24 4

A: Given that

Q: show work.

A: The given conditions to find

Q: Given: A = 25,34° and B=134,66° Calculate the following if: (9) cos (A+B) sin 2A (a) 2. tan-A -2 cos…

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

Q: Which of the following is equivalent to sin 4? COS 4 b. COs C 17 tan C 15

A: Solution ) sin A = 15/17 cos A = 8/17 tan A = 15/8  cos C= 15/17 tan C = 8/15 Hence sin A = cos C

Q: Use the given information tan α = 8/15, 180° &lt; α &lt; 270° to find the exact value of the…

A: Use the given information tan α = 8/15, 180° &lt; α &lt; 270° to find the exact value of the…

Q: 3. Determine the exact values for each of the following: 57 (137 (b) cos 4 - 57 (c) sin 3 (c) tan 6

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Q: If @= tan(1) and 180 <0<360", which of the following is equivalent to cos 6? O V2 O 1//2 O-1/V2 01…

A: The detailed solution is given below Thank you

Q: 97. If sec a = 10/3, then what is cos a? %3D

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Q: to 11. If sin 18 0.309, determine the value of cos 72.

A: Answering question number 11 since 10th is already been correctly solved.

Q: 15. Use the formula cos(2x) = 1 – 2 sin? z to find cos , if sin O V? O va 2

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Q: If sin A =0 1/3 with 90° &lt;=A &lt;=180° and sin B = 3/5 with 0° &lt;= B &lt;=90°, find each of the…

A: Given: sin A = 13 with 900 ≤ A ≤ 1800 and sin B = 35 with 00 ≤ B ≤ 900   To find:            cos A2

Q: If sin a- 4/5, what is cos B? O 5/4 O 3/5 O 4/5 O not enough information

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Q: What is the Cos (2a) if Sin a and Cos B are the same from Question 3? 33 16 1 16 7. 16 1 118

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Q: Given sin 0 = , 0< 0 < %, find Cos 20 17 25 21 25 O 10 21 O 12 25

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Q: 12. If 90° < 0 < 180° and sin 0 = 4, find cos 20. 41 49 8 49 41 49 8 49

A: The objective is to find cos (2 theta) .

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

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Q: 10. Use the formula cos(2a) = 1 – 2 sin? æ to find cos , if sin O v2 2 O v? 2 O_1 2

A: Given that       cos(2x) = 1 - 2sin2(x)  and sin(pi/4)=√2/2 Here we have to find cos(pi/2).

Q: 5. If 270° <0 < 360° and cos 0 = , find cos 20. 225 225 104 225

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

Q: 29. If sin (a) 3 5 -34 and cos<0, then tan = = 3 (b) (c) (d) 4 3 六

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Q: 2. If 90° <0 < 180° and cos 0 = -, find cos 20. 25 16 25

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Q: If 0° < 0 < 90° and sin 0 = , find cos 20. %3D 25 25 18 25 14 25

A: Some Trigonometry Formulas: 1.) sin2θ+cos2θ=12.) sin 2θ=2cosθ sinθ3.) cos 2θ= cos2θ-sin2θ

Q: 13. If 90° < 0 < 180° and sin 0 = , find cos 26. 49

A: sinθ=perpendicularhypotenuse cosθ=basehypotenuse we are given sinθ=27 which implies , base = 2 and…

Angles

In mathematics, angles constitute a very important part. Just like the concept of lines, an angle is a necessary figure that is used for measurement. How do you define its formation? It is formed when two or more lines meet at a point. The point at which two or more lines meet is known as the vertex. When the lines get inclined at this point, they do form various angles. Angles are measured from the vertex in terms of degrees.