# math (trig.)

139,718 results

### math

could someone please refresh my memory of the basic trig functions? ex) cos^2 + sin^2 = 1? That is a trig identity. http://www.sosmath.com/trig/Trig5/trig5/trig5.html

### Math- gr.12 Trig.

Hi, could someone explain to me how to use a counterexample in trig to prove whether something is either an identity or equation? For ex. how would you do that with this question? sec^2x-tan^2x= cos x

### Math trig

Hello guys. I am just wondering if tan^2 A (tan squared A) = sin^2 A /cos^2A And 2tan A = 2sin A / 2cos A This has been bothering me when I have to simplify trig. Thanks in advance.

### precalc

Suppose that z1=6-8i. Find: A. The Trig Form of the complex number z1, where your theta is in degrees. B. The Trig form of z1*z2, where z2=5[cos(60degrees)+isin(60degrees)] C. The Trig Form of (z1)^4

### calculus

1. what trig function has an amplitue of 1 and negative values for angles between π/2 and π? 2. what trig function never crosses the x-axis and has a value of 2 at π/6? are these correct? 3. what trig function has a period of π and is undefined for -π/...

### Math - Trig

Hi I have a Trig question that i don't understand, can someone please explain how to solve for it using cosine law?? A Clock with a radius of 15 cm has an 11 cm minute hand and a 7 cm hour hand. How far apart, to the nearest centimetre, are the tips of the hands at each time? ...

### trig

What kind of reflections are the following trig functions? y = 3cos(x-1) y = sin(-3x+3) y = -2sin(x)-4

### trig

What is the shift along x of the following trig functions? y = (3sinx/2) + 4 y = -2sin(x)-4 y = sin(-3x + 3)

### trig

express the trig. ratios sinA,secA n tanA in terms of cotA.

### trig

How do you solve cos(2arcsin 1/4) using inverse trig. functions??!! PLEASE HELP ME!

### Trig

Find (if possible) the trig function of the quadrant angle. sec 3pi/2

### trig

What kind of reflection does the trig function y = cos(4x/3 minus 1) have?

### trig

What kind of reflection does the trig function y = cos(4x/3 minus 1) have?

### trig

how do i do this? give the signs of the six trig functions for each angle: 74 degrees?

### trig

simplify to a constant or basic trig function.. 1+tan(x)/1+cot(x)

### trig

find the 5 trig ratios when sin theta = -5/13 and lies in quadrant 3

### Trig

Does anybody know a good website that will help me with finding the six trig functions of a point NOT on the unit cricle?

### trig

use the unit circle to find the exact value for all the trig functions of è=2ð/3.

### Precalculus

How would you solve this trig function: cos2x=sin^2-2 how do you know what trig identities to use?

### Trig

find the exact values of the six trig functions of angle... sin(-315degrees) how do i do this?

### trig

I don't know to find the derivative of the following trig functions. Please help. f(x)= cotx h(x0= secx i(x)= cscx

### trig

I don't know to find the derivative of the following trig functions. Please help. f(x)= cotx h(x)= secx i(x)= cscx

### trig

find the 5 other trig functions if cos(theta) = square root of 2/2 and cotangent is less than 0

### trig

if (-12,5) is a pointon the terminal side of an angel 0 find the exact value of six trig funcation of 0

### trig

what is the exact value of 7pi for all trig func.?

### Trig

Find (if possible) the trig function of the quadrant angle.

### trig

write a product of two trig functions that equals 1.

### Trig

Solve the following trig equation 2cos(x-π/6)=1

### Trig

csc thea= -2, quadrant 4. what are the six trig functions?

### trig

TRIG Identities, Gr. 12: Prove: cot4x=1-tan^2x/2tan2x

### trig

What is the shift along x of the trig function y = cos(4x/3 minus 1)? Any link of proof would be appreciated if you have one Thank you

### trig

What is the shift along y of the trig function y = cos(4x/3 minus 1)? Any link of proof would be appreciated if you have one Thank you

### trig

Let Q be an acute angle such that sinQ=.6. Find the values of the following using Trig Identities: cosQ and tanQ

### Trig

Use Trig identities to verify that sec^4(x)-tan^4(x)=1+2tan^2(x), Only work with one side of the equation

### Please help me with trig.

One more problem.. Given sin t= 3/11 and cos t<0, find the values of the remaining 6 trig functions.

### trig

how to i find the six trig values for (7pi/3)

### trig

what's the single trig. function of cos6xcosx-sin6xsinx

### trig

Suppose that q is in standard position and the given point is on the terminal side of q. Give the exact value of the indicated trig function for q.

### trig 26

simplify to a constant or trig func. 1. sec ²u-tan ²u/cos ²v+sin ²v change expression to only sines and cosines. then to a basic trig function. 2. sin(theta) - tan(theta)*cos(theta)+ cos(pi/2 - theta) 3. (sec y - tan y)(sec y + tan y)/ sec y combine fractions and simplify ...

### Trig

The next two steps in solving this trig identity question are ??? 1/csctheta x costheta x sintheta x sectheta = sinsqtheta arghhh need help please

### trig

What is the range of the trig function sin(-3x+3)?

### Trig

Trig Identity. 1-sin^2x/1-cosx

### trig

write 2+2 squareroot of 3i in trig form.

### trig

Getting ready for trig semester finals. Can't figure out how they are simplifying these equations. (these are the review not actual test) tanx-sqr3=2tanx and 2sin^2+sinx=0

### Math/Trig

How would I evaluate these trig functions without using a calculator? U: sin(-13π/6) cot 11π/6 cot(-14π/4) sec 23π/6 Thanks in advance ^^; and if you'd tell me step by step on how to do problems like these I'd be grateful :D

### math (final trig problem)

Solve for x on the interval [0,π/2): cos^3(2x) + 3cos^2(2x) + 3cos(2x) = 4 I havent done trig for a while so what exactly does that mean in solving for x on that interval and how would i go about doing that? Where are you getting these tough trig questions?? how about ...

### Trigonometry

Use the trig Identities to find the other 5 trig functions. Problem 7.)Tan(90-x)=-3/8 8.)Csc x=-13/5 9.)Cot x=square root of 3 10.)Sin(90-x)=-.4563 11.)Sec(-x)=4 12.)Cos x=-.2351 I need HELP!

### trig

I am currently taking a trig class. I need help understanding how to solve for sin,cos, and tan in problems which give an angle and a side length or the hypotenus. Any help would be muchly appreciated

### trig

combine fractions and simplify to a multiple of a power of a basic trig. function.? sin x/cot²x - sin x/cos²x

### trig

I have heard that trig CAN be super easy, that there are just, like, 10 rules you need to memorize then all the problems are easy. ... Does anyone know what these are? Thanks!

### Trig

Im having serious issues with verifying Trig. identities. Please help! Here is an example: (tanX-secX)^2= 1-sinX/1+sinX

### trig

Solving Trig Functions: How Do You Solve For Sin 7.5 Using Half-Angle and Double-Angle Identities?

### Trig

Find values of all six trig functions if sin(theta)= 4/5 and theta is in the second quadrant.

### trig

If cos 0 = - 1/2 and tan 0 > 0, find the quadrant that contains the terminal side of 0, and then find the exact values of the other five trig functions of 0.

### trig

find the exact values of the six trig functions of theta equals six pi divided by 8

### trig

2sin(4x)[(cos(3/2)x)(cos(5x/2)-sin((15/4)x)]+x can someone simplify this using trig identities?

### trig

Determine if the value of each trig function is positive, negative, zero, or undefined. a) tan 310 degrees b) cos 7pi/6 c) sin -245 degrees d) sec( -7/2)

### algebra/trig

1.Find the domain f(x)=ã(x^(2)-9) 2. Find all six trig functions for (-3,4)

### trig

hi, I have a placement test coming up tomorrow, and I'm pretty confident about all the stuff that's going to be there except trigonometry. I took trig two years back and I understood it very well. But now it's been so long and I can't even remember the basics. Is there any ...

### trig

Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.

### Trig identity.

I need help with verifying these trig identities: 1) sin4x = 4sinxcos - 8sin^3 x cos x 2) cos3x = cos^3 x - 3sin^2 x cos x

### trig

Prove the following trig identity: 1 + sinx = sinx(1+cscx)

### trig

how do i find six trig functions for cos(pi over 2-x)=3/5, cos x=4/5?

### Trig

HELP!!!! I don't know how to do the trig identity with this problem csc^4 x-cot^4x= Csx^2 x + cot^2x

### trig

how to graph thr trig function f(x)3x-180)+2 and the parent function?

### Math-Trig

Trig Questions- 1. Write the algebraic expression which shows Cos((ArcSin(4/X)), 2. Angle If Csc(-Θ)=15/4? 2. - what quadrant is it in, find the sin(-Θ), Sin(Θ), Tan(90deg-Θ), Tan(Θ), csc(Θ), Sec(-Θ+360deg), Thanks

### math/trig

A ship sailed on a bearing 140 degrees. It was then 90 km south of its orignal position. a) draw a diagram to show the ship's journey b) how far east of its original position is it? what ratio would i need? (sine,cosine or tangent) i know that all trig questions have a right-...

### graphing trig functions

for graphing basic trig functions such as y=2sinx or y=1/3cosx, how do you know what the points are to graph with out using a calculator?

### trig

use trig identities to rewrite: (1/(1-cos4v))-(1/(1+cos4v))

### Trig

Prove the trig identity cos(4x)=2-sec^2(2x)/sec^2(2x)

### Trig

Prove the trig identity cos(4x)=2-sec^2(2x)/sec^2(2x)

### trig

prove the trig identity cos(4x) = 2-sec^2(2x)/sec^2(2x)

### trig

Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function. Sec^-1(-2) I got 2pi/3 could someone tell me if that is right? And if not, could someone please explain how to get the answer.

### Pre-Cal

[Note: I'm still having issues with identities with regard to trig] Verify the Trig. identities: (a). cot(x+y)=(cotxcoty-1)/(cotx+coty) (b). sin0(cot0+tan0)=sec0 [Note: 0=theta symbol]

### Trig

How do i set this trig problem up? PLEASE help me. Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = -1/2, with t in quadrant 4.

### Trig

A ramp 38' long rises to a platform. The bottom of the platform is 20' from the foot of the ramp. Find x , the angle of elevation of the ramp. Round your answer to the nearest hundredth of a degree. After this question I'm done with TRIG!!! Thanks

### trig

how would you verify this trig identity (1+cos(x) / 1-cos(x)) - (1-cos(x) / 1+cos(x)) = 4cot(x)csc(x) ? help please!

### trig

please help me. use trig. identities to find the exact value. tan 25° + tan 5° / 1- tan 25° tan 5°

### trig

please help me. use trig. identities to find the exact value. tan 25° + tan 5° / 1- tan 25° tan 5°

### Math (integrals) (Trig Subsititution)

Find ∫1/((x^2+5)^(3/2)) dx I figured this would be a trig substitution problem, so I set x = sqrt(5)tanθ and dx = sqrt(5)sec^2(θ) dθ This would lead to: ∫(sqrt(5)sec^2(θ)) / (5tan^2(θ) + 5)^(3/2) dθ But I'm kinda lost on what to do next. I'm used to breaking up the ...

### trig

FInd the exact value pf the 6 trig function of alpha Given: point (-2,-6) on the terminal side of the angle in standard position sin alpha cos alpha tan alpha sec alpha csc alpha cot alpha

### trig

Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function. Sec^-1(-2) Sec^-1(-sqrt2) Tan^-1(-sqrt3) Tan^-1(sqrt3)

### trig

find each value by referring to the graphs of the trig functions. 1. sec 4 pi...i got 0 Find the values for theta for which each equation is true. csc (theta)=1 i got pi over 2 +2 pi n

### Trig/Pre-Calc

Need help with current Trig problem for tomorrow: Solve the logarithmic equation algebraically. Approximate the result to three decimal places. 6log3(0.5x)=11 I know to start off the equation you divide by 6. I know the answer is 14.988. I just am puzzled on how to receive the...

### trig

How do I prove these trig identities? secx-cosx/tanx =sinx And 1+sinx/cosx+ cox/ 1+sinx=2secx

### math algebre2 and trig

5>4b+9>17 - -

### math trig

ln(2x-5)= 4 how do i this problem? thanks!

### math trig

Point P(k

### trig

let P be a point in Q1 such that the slope of the line connecting P to the origin is sq. root of 2 and the distance from P to the origin is 3 units. Find the coordinates of P, state all trig values for angle formed by the line and the positive x-axis, and the measure of said ...

### Math-Trig

solve for a: V=4/3pia^2b

### Math (trig)

4cos(x)+5=6sec(x)

### trig

find the math product of u and v u= (6,7) v= (-3,9)

### trig

If cos(t)=(-7/8) where pi<t<(3pi/2), find the values of the following trig functions. cos(2t)=? sin(2t)=? cos(t/2)=? sin(t/2)=?

### math (trig)

i have some problems doing trig the first one is: Show that cos(x/2) sin(3x/2) = ½(sinx + sin2x) i know that you are supposed to substitute all those trig function things in it but i kind of forgot how to the only that i can see substituting in is the double angle one for ...

### trig 30

For csc^2 A-1/cot A csc A, what is the simplest equivalent trig expression? The answers I have to choose from are sin A, cosA, tan A or csc A, but I don't know how?? csc theta= 1/sin theta but its ^2. Help please I don't even no where to begin

### Math (Trig)

What does sec^2(-2) equal? Can you explain why?

### math (trig)

how do you solve for x? 2cos^24x-1=0

### Trig math

How do I solve for x? cos(4x)(2+tan^2x)=8

### math

simplify sin(540-2x) this is to do with trig