20. Suppose 0 is an angle such that cos 0 = . Evaluate cos(20).

Q: 8. In ARST, mZT = 90, RS = 13, and ST = 12. Find tan S. %3D

A: tan(S) = ?

Q: (4) Find all the angles frem o to 360° which satisfy the equation COS X %3D

A: We have to find out the angle

Q: 5. If p(x) = cos x, find p(0)

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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: D?/if w= Cos (X+y)+Sin (X-y) Show that

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Q: If sin A = 5 with A in QI , find Cos Cos Cos Cos cos CoS

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Q: In right triangle ABC, mZA = 30° and mZB = 90°. Which of the following are true? 1. sin(A) = sin(C)…

A: topic- trigonometric identities

Q: Enter the EXACT value for each of the following. (a) cos( 0°) = and sin( 0°) = (b) cos( 45°) = and…

A: Answer is mentioned below

Q: 17 5 with B in QIII, find 13 2. If sin A =with A in Ql and cos B a. cos(A + B) b. tan(A + B) C.…

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Q: If sin x= 1/3 and sec y = 17/15, evaluate cos (x+y)

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Q: Evaluate S cos ve Vē sin? ve

A: consider I=∫cosθθ sin2θdθto solve the itegral we can use method ofsubstitution

Q: find cos(u/2) if cos u = 0.229 and u is in quadrant 1 cos (u/2) = ?

A:

Q: 2. (20 pts.) Let cos() =- and <B< Use one of the Half-Angle identities to find the exact value of…

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Q: snip

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Q: -57 If 0 -, then 6. sin(0) = %3D cos(0) = %3D

A: θ=-5π6 find the value of  sin(θ) sinθ=sin-5π6 sinθ=-sin5π6 sinθ=12

Q: If sin a: 1 then sec a =?

A: We can solve this by using trigonometric identities . We can use the identity sin2α+cos2α=1 . By…

Q: In right argle triargle, A =q0° and tanc = V3 End : sin B cośltcos Bsin C %3D

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Q: If sin A lind cos 2A

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Q: Recall that sin² e means (sin 6)2. 2 If sin e = find sin? e. sin? e =

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Q: 7 If cos x s and sin y = -0 < x <,n < y < *, evaluate sin(x – y) using compound angle formula. %3D…

A:

Q: If w=f(a,b,c)=cos(ab)sin(b)+c, what is at ( -,6

A: Given function and point is  w=f(a,b,c)=cos(ab)sin(b)+c and 12,π3,6

Q: If tan ☺ =3, T e<3T Find the exact att valce AJ sin 6

A:

Q: If sin z + cos I 2, then the value of sin" r+ cos" z will be-

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Q: 2. If sec(a) = , then what is the value of cos(a)? 25.2 %3D 19.4 25.2 19.4 O 16.1 19.4 16.1 25.2…

A: secα=25.219.4cosα=1secα

Q: 1) Evaluate. x cosh ax dx

A: As per guideline we have to solve one question

Q: If cos t =-,what is cos 2t ? 4 |

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Q: 5 In right triangle DEF, if mLF = 90 and cos E = sin D is equal to

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Q: Let cos os (x) = 1//5 with r in QIV. Find cot (2r).

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Q: 5. 3 If tan B = - with * <B < 2n , find cos (2ß). %3D

A: It is known that in the first quadrant all trigonometric ratios are positive, in the second quadrant…

Q: To evaluate tan z cos z dz, we may substitute u= cos z.

A: Given,          ∫tan3xcos2xdx

Q: 34. If cos e Find tan O. 2. N/3

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Q: if g and B ane actute and Cos 28 Cay1) shor that n-1 tang- ntl tan B.

A:

Q: 24 If tan(@) = ,0sosthen sin(@) equals Preview cos(@) equals Preview

A: We are given that tan(θ)=247, 0≤θ≤π2. Now,           tanθ=247⇒θ=73.74∘ . So,            sin73.74∘…

Q: Use Figure 22 to find all angles between 0 and 2π satisfying the given conditions.

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Q: Differ entiare Y = \og (coc V; ) Ditterentiare り; x& cos cos"s

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Q: Evaluate 3 cos z sin" e dz.

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Q: Suppose cos(α)=−3/4 and sin(α) is negative. If the point (−3,y) is on the terminal side of the…

A: Use trigonometric ratio  &amp; its identity

Q: Sam) sin |cos dx O32 coss 35 -5cos? + C 32 cos 32 cos + C 4 7 5 32 cos 35 5sin? +2+ C O 32 7( x), 32…

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Q: 57 then If 0 = sin(0) = %3D cos(0) = %3D

A: Given θ=5π6

Q: if cos A=1/2 with A in QIV find sec A/2

A: Given  We know that

Q: find dp/ dq. sin q + cos q = cos q

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Q: 2. If cos 4A = 23/49, find tan A %3D

A:

Q: 15. Evaluate o" Sy" cos(x?) dxdy,

A: Given: I=∫0π∫yπcosx2dxdy   So, The region bounded by the lines x=y, x=π, y=0 &amp; y=π is as shown…

Q: Use the definitions of sin(z) and cos(z) given in Lecture 13 at the 13:30 mark to prove that sin z+-…

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Q: ди du and ar if u = e" cos 0 . cos(r sin 0) (1) Find

A: It is partial derivative

Q: If z = os0+ I sin 0 and y= cos Isin p, then show that %3D 2 cos(@-).

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Q: If tan A =ntan B and Sin A :m sin B. psove that co s A: m²-1 2.

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Q: If cos 0 = and 0 is acute, then cos 20 is

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Q: - con uen sin a pe() & BET, 2 = cos given sin B =

A: