Question 3 Given: sin 0 = 15 17' , where 0 <0< 90 Find: cos 20 240 161 289 161 161 240 161 289 Question 4

Q: Find the exact value of sin 80° cos 20° - cos 80° sin 20°.

A: Use the identity sina-b=sin a·cos b-cos a·sin b.

Q: Find cos 0 if cot 0 =4/3 and sin 0 &lt; 0.

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

Q: 2. Cos sin

A:

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: Determine the exact value of sin 160° cos 35° – sin 75° cos 55°. -

A: Given information: sin160cos35-sin(75)cos(55)

Q: IT – sin 8. 2 Simplify cos - 8.

A: Given: (1)   cos2π8-sin2π8 (2)  2sin13∘ cos13∘

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

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Q: Evaluate the exact value of cos sin 61

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Q: b. What is the range of y = sin-12x? %3D

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Q: Find Sin, Cos, Tan 12 A 8.

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Q: Question 5 What is the exact value of A B C 위~ SI 2 2 ㅠ 200(1) - 40%(1 COS D √6 2

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Q: Find the value of 2 sin2 30° tan 60° – 3 cos2 60° sec2 30°

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

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Q: Show sin 3A = 3 sin A cos²A - sin A.

A: Explanation: Given that: sin3A=3sinAcos2A-sinA Concept: sin3A=3sinA-4sin3A sin2A+cos2A=1

Q: What is the exact value of cos- (sin a) where a = 13T radians? 4

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Q: a) Evaluate the following: 1 - 2 - L {sin3t cos3t} , 3 - I {sinht sint}

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Q: Determine the exact value of cos 45° x tan 60° sin 30°

A: We know, cos(45∘) = 12 ,sin(30∘) = 12 , and  tan(60∘) = 3

Q: if cos A=-0.12 then what is the value of sin(90-A)? the exact value of cot-7pi/6 and sin4pi/3?

A: