Which one of the following is not equal to cos 4x for all real values of x?«- A sin? 2x – cos? 2x+ В 2 cos? 2x – 14 C 1-2 sin? 2x D (cos 2x – sin 2x)(cos 2x + sin 2x)- E cos 3x cos x – sin 3x sin x

Q: How do I simplify (9-sin(x))(4-3cos(x))-(9cos(x))(3sin(x))

A: Given that: (9-sinx)(4-3cosx)-(9cosx)(3sinx)

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

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

Q: Show that A" cos (ах ah + b) = | 2 sin cos a + bx +n (ah + T 2

A:

Q: According to the second translation theorem, how do we fınd the indicated missing factor? -25 d{sin…

A:

Q: fOo)=Sinx-41 Cos x 1X-1 cos X (x)

A:

Q: "(등 -2) + ain (품 + 22) The simplified form of cos 22x) + sin O V3 cos 22x + sin 22x O v2 cos 22x + 2…

A:

Q: (종-272 27=) + ain G + 272) The simplified form of cos O V3 cos 27z + sin 27z V3 cos 27z + v2 sin 27z…

A: Given cosπ6-27x+sin(π3+27x)

Q: If z = 2 ( cos 2¥/3 + isin 2¥/3 ), then z^3=   i. 2 - i8√3 ii. -4 + i4√3 iii.-8-i√2 iv. -8 - i4

A: Using de-moivre's formula :

Q: The expression sinx 1–cosx Select one: O a. (sinx)(1-cosx), x # 2n π, nel b. C. is equivalent to…

A: Here we have to find the equivalent expression of the given one.

Q: sin?() + cos? () + tan? (4) 2 1/2 2 1 1/2

A:

Q: dx %3D = 7 in the expression for ap and simplify. Substitute dt dt x + 5sin 5x(cos 5x) dx dD dt Vx +…

A: Here we have to substitute the given derivative.

Q: sin( 2 tan-1 (x/ 12)) = Select one:

A: Can solve the given function by using double angle formula

Q: True or False: sin- (sin æ) = x for all possible values of x. True False

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Q: cos(-x)+sin(x=x) Q4 prove that sinx 2

A:

Q: Sin 20 + cos20 +1 Sin 20-cos20 +1 - - сото

A:

Q: 1-cosx sinx

A: Using Trigonometry property,

Q: ·/₁ Evaluate cos x sin³ x dx. 2 cos(x) + cos¹ (x) ²/ X syntax error. + C

A: Given query is to find the integral.

Q: 2 1-tan ² x 2 1+ tan² x 2 = cos²x - sin² x

A:

Q: how to find cos z using, cos^2x +cos^2 y+ cos^2 z=1     where x = 45deg  and y = 60deg

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Q: - sin sin -y = sin (x+y) Prove that cos Xcos 4 -y 4 -x sin 4 X - 4

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Q: Show the solution for  (1 + cos A) (1 - cos A)

A: Explanation of the solution is given below..

Q: - Find all solutions for 4 cos x+V3 = 2 cos x if 0<x<2n. %3D

A:

Q: 1 what are possible values of cos x and tanx? 2 If sinx= Select one: V3 and tanx= 2 1 a. cosx= V3 V3…

A: Consider the right triangle with one angle x degree. Let a be the length of the adjacent side and b…

Q: | sin2xdx = %3D cos2x A O +C cos2x B O +C 2 cos2x+CCO -2 cos2x+CDO

A: ∫sin(2x)dx= -(cos2x)/2+C