Which one is the correct expansion of cos 60? O cos 50 cos 0 + sin 56 sin e O cos 40 cos 20 – sin 40 sin 20 O 2 sin? 30 – 1 O cos 50 sin 0+ sin 50 cos 0 Proviour

Q: Which expression is equal to cos(6t)?

A: Recall:  cos(2t)=cos2(t)-sin2(t)     Given,   cos(6t)

Q: 1-2sin? x 2. Prove cos x+ sin x +2sin cos-= cos x 2

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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: Which of the following is equal to cos 63?

A: We know that the identitycos2x=cos2x-sin2x         =1-2sin2x         =2cos2x-1…

Q: -1) = 3 sin (tan 8/

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Q: sin 45. cos 60 + sin 60. cos 45 sin(... ) ... .. (a) sin 105 (b) sin 60 (c) COS 105 (d) cos 45

A: first we will solve the expression sin45. cos60+sin60. cos45 we know that…

Q: Verify the identity. 2 cos 2x sin 2x = 2 csex 6 sinx sinx COSX Continue Statement 2 cos 2x sin 2x…

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Q: Which of the following is an equivalent expression to sin - (sin )(cos²0)? O cos²e O cos³e O sin²e O…

A: Given expression      sin(θ)-(sin(θ))(cos2(θ)) Here we use the following identity:…

Q: a) 6(sin15degrees)(cos15degrees) b) sin(7pi/12)sin(13pi/12)-cos(7pi/12)cos(13pi/12) evaluate each…

A: Part a,          6sin15°cos15°We know that,         The double angle trigonometric formula is given…

Q: 4 and cos b= 2/5 sin b = V5 Given sin a = cos a = - find sin(a + b) SATO O_2V5 25 2/5 25 O 11V5 25

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Q: Which expression does (cos 3x)(cos x) - (sin 3x) (sin x) simplify to? O cos 4x sin 2x O cos 2x sin…

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Q: Sin e + cos 0 sin g-cos 0 sing +cose sing- cos e 1-cos?0 1.

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

A: Let's find.

Q: FIND THE AREA OF THE TRIANGLE

A: The measure of sides of triangle are a=22 in. , b=45 in. ,c=31 in. We will find the area of triangle…

Q: Verify the identity. cos 7x- cos 9x tan 8x sin 7x- sin 9x Statomont

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Q: Verify the identity. cos csc 0 • tan 0 = 1 Which of the following four statements establishes the…

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Q: Perform the indicated operation and write the result in standard form. (2(cos 45° + i sin 45°))

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Q: Which one of the following is an equivalent expression to 57 6 57 sin cos 6 – cos sin - 6 O sin T O…

A: The formula for sinA+B can be defined as sin(A+B)=sinAcosB+cosAsinB . The formula for sin(A-B) can…

Q: Which expression does cos(-0)+sin sin + cos O2cos e 01 ¹(1+0) = 00 +6 simplify to?

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Q: Which of the following is FALSE? tan Tan csc Csc-1 sc (c cot Cot-1 (c sin Sin-1 1 2 3 2 3 2|4 3 2 3…

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Q: Which expression is equivalent to cos²x+cot2 x + sin² x? Otan² x O cot² x Ocsc² x O2 csc² x E

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