7. Simplify the following formula sin140° cos40° + cos140° sin 40°

Q: 4. Apply half-angle formula to find a. cos 15° b. sin 15° C. COS

A: Given: cos15∘, sin15∘, cos5π8 We know that cos2x=cos2x-sin2x…

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

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Q: Find the exact value of the expression.

A: Our Aim is to find the exact value of the expression given below:-

Q: 7. If 0° < 0 < 90° and sin 0 =, find cos 20.

A: To find: The value of cos2θ. Given: The value is sin θ=35 and 0°≤θ≤90°. Formula used: Trigonometric…

Q: If cos cos (3/3 + x) = 1/2, find the correct value of O 퓸 3 π

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Q: Give the exact value of the expression without using a calculator. 12 8 -D1 COS tan -1 + tan 15 12 8…

A: Use the inverse trigonometric formula, tan-1x+tan-1y=tan-1x+y1-xy So,…

Q: 5. If 270° <0 < 360° and cos 0 = , find sin . 3. 3

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Q: If sin(8) = 3 and 0 is in the 1st quadrant, find cos(0) 8. cos(0) = Enter your answer as a reduced…

A: Answer is given in next step.

Q: 4. Use your calculator to determine which value is greater in each pair. c. sin 48° or 2(s a. sin…

A: Solution Question 4(a) and 4(b) Given, sin36o  or  cos54o  cos89o or  sin1o   We have to find the…

Q: 무 2. If 270° <θ< 360° and cos θ %3D 를, find sin 을. O -4 6 O -4

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Q: 24 7.

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Q: Find the exact value of the expression. sin sin 16 CoS Cos 16 16 16

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Q: Simplify to an expression of the form (a sin(0)). 6 sin 기(프) 6 cos( 4

A:

Q: 4 If tan 0== 3T find the exact value of each of the following. 2 (a) sin (20) (b) cos (20) (C) sin…

A: We have to use properties of trigonometric angle to solve the given question

Q: 5. IF sin@=5 =E and@inthe first quadrant, find cos

A: We have to find the cos angle

Q: Apply the appropriate formula to evaluate the following. a. 2 sin 15° cos 15° * cos 21 - sin sin 9…

A: a. 2 sin15° cos15°=sin215°       ∵sin2x=2 sinx cosx=sin30°=12

Q: 10. If csc0 : and 0 is in the third quadrant, find cos 0, sin 0, and tan 0. 4 --

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

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Q: – 7. then find exact values for the following: 4 - If 0 = cos(0) equals sin(0) equals tan(0) equals

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Q: Find a solution for sin (O + 15°) = cos (20 + 30°). %3D

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Q: 4T 1.) sin 2.) cos 510

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Q: 180°), determine without the use of a calculator and with the aid of a diagram the value of: cosß…

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Q: Find the exact value of the expression. 5x sin COS COs sin 12 12 12 12 兀 sin 12 COS 12 sin Cos 12 12

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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: 24 If tan(0) 0 <0 2 then 10 sin(0) equals cos(0) equals

A:

Q: Find cos 6 given that sin(20) = 5/13 and 0<0 <

A: Use properties of right triangle to get value of thetha

Q: 10. Use trig identities to transform the left side of the equation into the right side. cos(0)…

A: To Prove: sin θcos θ+cos θsin θ=csc(θ).sec(θ)

Q: Give the EXACT values for the quantities. (a) sin 19π/4 = (b) cos −14π/3 = (c) cos −5π/6

A: Note: - Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: 2. Find the exact value of the following expressions: а) sec-- cos + sin b) sin 12 4 6

A: topic - trigonometric ratios

Q: (Note: Check the answer by the calculator) sin 0 + In + 22+3 = -3 1-cos 20 In y? + 322- 4 = 2 2 +2ln…

A: Given system of equation can rewritten as : sinθ+ln1y+2z+3=-3lny2+32z-1-cos2θ2=421+cot2θ+2lny+2z=-3…

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

A:

Q: 40. tan(cos 4

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Q: . Find the following values without using a calculator. 1. cos () 2. sin (-) 3. cos(-57) 4. sin (5)…

A: 1)cos(11π3)=cos(4π-π3)               =cos(π3)             (cos(2nπ-∅)=cos∅)cos(11π3)=122)…

Q: If it is known that sin 0: and n<0 < find the exact value of cos(20). -

A: Consider the given value. sinθ=-13 The angle lies between third quadrant and the cosine function…

Q: 0° < 0 < 90° and sin0= 7/25, find cos 0/2.

A: Given query is to find indicated angle. Given sin θ=725, 0&lt;θ&lt;90 Use the following identities:…

Q: If sin A = 65 with 180° < AS 270°, find cos 2A and cos 65 Cos 2A = COS 2

A: To find the value of the following,

Q: 4 1. Find the value of (icos-+ sin TT sin-) 8.

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Q: Solve for θ to the nearest tenth of one degree. 1. sin θ = 0.7218 2. sec θ = 1.1111 3. cos θ =…

A: Given: sin(θ)=0.7218,    sec(θ)=1.1111,   cos(θ)=0.6128

Q: Find the exact value.. 1. Cos 70°cos40°+sin70°sin40° 2. Sin 7π/12 using the fact the 7π/12= π/3 +π/4

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Q: If sin(8) = 1 and e is in the 1st quadrant, find cos(0) cos(0) = Enter your answer as a reduced…

A: Given sinθ=34 and θ is in first quadrant.

Q: 10. 3 sin 30 cos Od0

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Q: 1.1 if x=37° and y=44°, Calculate the value of sin'x + 2cos y 1.2 WITHOUT using calculator,…

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Q: 5. sin 0 ( 2 cos 0 – 1) = 0

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

Q: 19. Evaluate the expression without using a calculator. 1 sin 2.cos

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Q: 97. One petal ofr = 3 cos 50 %3D

A: The given polar curve is r=3cos 5θ. Evaluate the roots of the function r=3cos 5θ as follows. r=03cos…

Q: GIven that cose= 3 Sin e0 %3D find Sin 20 Cos 20 tan 20

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Q: What is the exact value of sin(67.5°)cos(22.5°)?

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Q: Find the exact value of the expression without using a calculator. 7T sin Cos 24 sin cos 24 8 V3 OA.…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Solve for O &lt; 0 &lt; 2π sin 0 = cos 20 Hint: Use appropriate identities to express cos 20 interms…

A: Given equation, sinθ=cos2θ,    0&lt;θ&lt;2π

Q: 13 6 Give exact answers. If csc(x) = = sin(-) = ³(²-) tan()=[ COS (in Quadrant 2), find

A: NOTE: Refresh your page if you can't see any equations. . as we know,