. In AABC if m LC = 90, AC = 8, and AB 17, then cos B = _? %3D

Q: What is the value of sin 30°cos 60° + cos 30°sin 60°? 0 O A. O B. O C. O D. 1 NIT 2 1 2

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Q: 2. Given tane = -√√3, 90° ≤ ≤ 180°, the exact value of sine can be written in the form √a b value of…

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Q: 19 If x= cos 30 and y = sin 30 , then O a.-3 cot 30 O b. 3 tan 30 O C.-3 tan 30 o d.- cot 30

A: We have to find the differentiation like in the parametric form of differentiation . We have the…

Q: Prove that 17 cos? 40° cos 80° + cos 80° cos? 20° + cos 200° cos 40° SOS 16

A: Consider the expression cos240°cos280°+cos280°cos220°+cos2200°cos240°=1716

Q: st Show all -. If s = 1+3i, t = 2 – 5i and u =– 2+ 5i then calculate your working. Write your answer…

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Q: 2. Determine the exact value of the following and show all your steps. a) 2tan²60°x cos²30° b) 4cos…

A: A detailed solution is given below.

Q: 1. Refer to each 1. Is AACB~ AMNO? Why? A 62° C r B M 28° N

A: To determine whether ∆ACB~∆MNO.To explain why is this.

Q: Simplify: (csc A)(tan A) %3D

A: cscA = 1/sinA tanA=sinA/cosA

Q: In a right triangle ABC, If sin B = 3 / 5, and cos B = 4 / 5 ,then tan B = ?

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Q: 5. sin 20 1-cos 20 = cote

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Q: 7/4 8 + cos³ u du = cos? u

A: Given Data: Integrand: ∫0π/48+cos3ucos2udu Simplify the integrand,…

Q: Let , = cos-+i sin and z, = cos-+isin 6 Express in the form : =a+bi

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Q: Verify each identity. 9) cos (90° - 0) = sin e 10) sin (0+ 270°) = -cos 0

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Q: If Zc = 52° and Zb= 90°, then Za a b

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Q: Evaluate x cos bæ?) dx 3

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Q: If AABC = ADEC, LABC = 2x, ZBCA = 48°, and LCDE = 740 A B x - [ ? ]

A: We will first use the fact that the two triangles are congruent to find the third angle of triangle…

Q: b) Calculate the angles between 0° s 0 s 360° for the following equations. Kira sudut-sudut antara…

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Q: 6) 2+3sin 0 + sin? 0 = cos² 0 %3D

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Q: Determine the exact value of the question in the attached image. Show all work!

A: To determine the exact value of cos(−45π​), we follow these steps:1. Understanding the angle:  −45π​…

Q: fe* sin 2xdx.

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Q: Find the value of each trigonon 2) cos A 8 6. 10

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Q: COS se de3D 70 .a O 128 35 兀bO 256 35 128 70 256

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Q: 5. Pick ONE of the identities. Prove the identity. State any restrictions on the variables. csc ß…

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Q: 20) Find the coefficient of the x6 term of (x + 3)°. 243 212 O256 264

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