7. Find the exact value of cos(tan (0.8)).

Q: Question in Image.

A: To Determine: Find the exact value :

Q: 2) Find the exact value of eac a) cos 135°

A:

Q: 20 What is the frequency of the periodic function f(0) =2 tan()? O 2 5 sin(-), What is the frequency…

A: Given f(θ) = 2 tan(2θ/3) Frequency of tan θ is 1 For f(θ) period is  π/(2/3) = 3π/2 Frequency is…

Q: 3. Evaluate fe cos rdr 4. Evaluate: / tan -1 (3x)dx.

A:

Q: 10. Find the exact value of cos 2x given that cos x =

A:

Q: 7. Find the exact values of: a) sin ¹(1) b) tan-¹(0) 5-¹ (13) 2 COS

A:

Q: 6. Find the exact value of the following sec tan E 6

A: We know the equation Sec (180 + x) = - Sec(x)

Q: /49-x² dx when converted to e is 7 sin ? 0 cos' 0 de

A: Proper substitution is needed to check it

Q: 13. Evaluate the function. Give the exact value. cos (tan (V3) -1 cos(arctan( v3% )= 0.5

A: We have to find out the value

Q: 2. If tan x = Find the sin x and cos x in the interval xe [n. : XE T,

A:

Q: 16. Calculate (sin 0 , 0 , cos 20) d0.

A: ∫0π< sinθ,θ,cos 2θ>dθ

Q: 1. Differentiate the following with respect to the variable given. 1 cosx 2 sin' x tan

A:

Q: -When the (4tan e. tan2 0 = 1),the value of (0) from 0° to 360°.

A: We will use the formula tan2θ = 2 tanθ1-tan2θ Hence 4tanθ . tan2θ = 14 tanθ2 tanθ1-tan2θ = 18…

Q: 1 Differentiate y = tan 8x + cos ,x

A: Using differentiation rule,

Q: Find an approximate value for cos46∘.

A: Taking We approximate

Q: 3. Find the period and amplitude of: y = 4 + +cos (x)

A:

Q: Find the exact value of the given expression. co(2 tan-(승)) cos 2 tan

A:

Q: Find the exact value of the expression. 1) cos s-1

A: Given expression

Q: a fe) = Vsec?x-1 cos(, x)

A:

Q: 2. Estimate cos (– 0.1) + cos 4

A: As per given question  We have to solve above question

Q: Suppose v is in the interval with tan v =-11. Find the exact expression for the indicated quantity.…

A: Given tan v = -11 And v belongs to (π/2, π)  That is v belongs to second quadrant.  To find cos(-v)

Q: 2x, given tan x= 2 and cos x is less than 0

A: Given tan x = 2 and cos x < 0.

Q: 4 where n<A<- 5 Find tan 2A. 2 (c) Given cos A=-

A:

Q: sin [ cos-1 (-글)

A: To find the exact value of given expression

Q: 3. Find the period and amplitude of: y = 4 +cos (*) COS

A:

Q: -5T cos 6.

A:

Q: Find cos 5, given that sin 1 and 0 <0< 90°. 4

A:

Q: 3. If cos x = 5 Find the sin x and tan x in the interval 13 xe 1]? X€ ,π

A: Given that: cosx=-513and x∈π2, π

Q: Find the exact value of cos 5p 12

A: We have to find exact value of the trigonometric expression: cos 5π12 Rewriting the given…

Q: If sin A=1/√10 with A in QII find cos 2A.

A:

Q: 13. If cos 0 has a negative value and tan 0 has a positive value, find a and b such 0< a < 0 <b < 2n

A: Cos X is positive in 1st and 4th quadrant. Tan X is positive in 1st and 3rd quadrant.

Q: Approximate to three decimal places.

A: (a) sin 73°20' Convert minutes into degree. 2060=13=0.3° Therefore: sin…

Q: What is the exact value of cos²(165°)? Show your work for full credit.

A:

Q: Refer to the graph of y = sin x or y = cos x to find the exact values of x in the interval [0, 4p]…

A: Given: cos x = 1 To find: Using the graph of y = sinx  or  y = cos x to find the exact values of x…

Q: Question 4 in picture

A:

Q: Show that cos + i) =:IG + e) + iv3 - e) 4

A:

Q: find the exact value cos151ocos1o + sin151osin1o

A: We have to use cosAcosB+sinAsinB= cos(A-B)With A=151 and B=1

Q: Refer to the graph of y = sin x or y = cos x to find the exact values of x in the interval [0, 4p]…

A: Consider the given equation as cosx=-12

Q: What is the exact value of Cos(210°)? V3 1/2

A: Answer and explanation is given below...

Q: At what value(s) of x does cos x = -x?

A: Given,

Q: 16. Find the exact value of: π a) sin¹(tan(- =)) 3 √₂ 2 b) sin(cos-1(-

A:

Q: 4. Use Walli's formula to evaluate 2 sin*x cos°xdx.

A: Given integral is as below:-                  ∫0π2 sin4xcos9xdx

Q: Suppose that at any given time t (in seconds) the current i (in amperes) in an alternating current…

A:

Q: 1. Match th A. Sin В. Cos С. Tan

A: As per the guideline i can answer only first question for you, more than one answer leads me towards…

Q: Find the value of: (1) sın (sin): (i) tan- (tan *(tan): (iii) cos (tan12 + tan"12)

A:

Q: 11T 2. What is the exact value of cos()?

A:

Q: 12. Find the exact simplified function value of tan (2a). 4 where TTSAL 3T 2. Given sin a= -

A:

Q: At what value(s) of x does cos x = 9x? X=

A: Cos x= 9x To find the value of x

Q: Find the exact value for the expression under the given conditions. 5 5 cos (a +ß), sin a = - for a…

A: Out of the six trigonometric ratios , two ratios are positive in 3rd quadrant i.e.tanx and cotx and…

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.