# alg/trig

4,385 results, page 20

### trig

Verify the Identity: sec(x/2)=the square root of (2 tanx/(tanx sinx))

### Trig

Solve the equation in the interval [0•,360•] Csc theta = 1+cot theta

### trig

explain the methid used to get the answers 45m*cos33=37.7m and 45m*sin33=24.5

### Trig

How do you convert rectangular equations into polar equations? If x4−y4=xy , then r2=atan(b); What is a? What is b?

### trig

i have to find a & c, b=2.489*10 to the nineth power and i have one degree 25

### trig

the question is: given sec x = 4, tan x < 0, find sin(2x), cos(2x)and tan (2x)

### Math/Trig

Solve: 2 cos2 x - 3 cos x + 1 = 0 for 0 is less than or equal to x is less than 2pi.

### trig

prove the identity sec^2x times cot x minus cot x = tan x

### trig

if sina,cosa,tana are in geometric progression then prove that cot^6a-cot^2a=1

### trig

convert the point with polar coordinates (2,7pi/6) into rectangular coordinates.

### trig

Verify the equation is an identitiy: cot(x)tan(x+pi) - sin(pi-x)cos((pi/2)-x) = cos^2x Thanks

### trig

The tangent of an acute angle equals 1/2. What is the sine of the angle? (A) 1/p3 (B)p5/2 (C) 2/p5 (D) 1/p5 ( E) None of the above.

### trig

5. If the angles X and Y each measure between 0° and 90°, and if sinX = cosY, what is the sum of the measures of the angles X and Y?

### trig

How do I solve.... Tan 2(theta) - Cos 4(theta) = 0 Domain: (0-360 degrees) Thank you.

### Math/Trig

Which logarithmic equation is equivalent to L^m = E 1) LogL E = m 2) logE L = m 3) logm E= L 4) logE m= L

### trig

solve the equation of the domain 0¡Ü¦È¡Ü2¦Ð 3cos^2theta - 5costheta -1 = 3sin^2theta

### trig

given cot-A square root of 5, find cot-B at the 4th quadrant.

### TRIG

Given that tanx = 1/sqr(15) and secx -4/sqr(15) find the value of sinx

### trig

if tan x= 4/3 and pip < x < 3pi/2, and cot y= -5/12 with 3pi/2 < y < 2pi find sin(x-y)

### Trig

True or False: For a one-to-one function, y = f(x),then x = F^-1(y). Explain your answer. Please help.

### Precalculus with Trig

Rewrite the following expression as an algebraic expression in x: cos(arcsin(x))

### trig

PROVE: Cos 2theta = .5 (cot theta - tan theta) Please help me

### math trig

a triangle abc has a mearsure of an adjacent 15 and 25 degree solve for the triangle

### Pre-Calc/Trig...

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=x^2+7

### Pre-Calc/Trig...

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=(x+5)^2

### Pre-Calc/Trig

How would I solve this one? I just can't get this one. 6x^2+11x-35=0

### trig

solve triangle ABC which have angleA=25.25,angleB=60.51 and a=3.82..find c...,find b

### trig

A road has a 10% grade (slope). To the nearest degree what is the angle of elevation of the road?

### Trig

Find the algebraic expression that is equal to sec theta - cos (-theta)

### Trig

Find sin(x+y), cos(x-y), tan(x+y), and the quadrant of (x+y) if sinx= -1/4, cosy= -4/5, with x and y in quadrant 3.

### Math (Trig) lowering powers

If cos^4(3x)-sin^4(3x)=cos(g(x)) then g(x)=? Use a^4-b^4=(a^2-b^2)(a^2+b^2)! thanks in advance for any help!

### trig

if sec theta =sqrt -20/3 state the exact value of tan theta

### Math (Trig)

Solve the equation for exact values of x. sin(x) = 1-2(sin(x))^2

### simplyfying expressions (trig)

can anyone tell me how to do this? thanks! (sin (x) / 1 + cos (x) ) + ( cot (x) / 1 + cos (x) )

### Algebra II/Trig

Simplify: 1/5(-5a^2b^3)^2(abc)^4 How do you simplify this. How does the "-5" play a role in this? how would you get 1/5 of "-5"

### Trig Proofs

Please solve this proof Tan(pi/4 +x)+ Tan(pi/4+x)= 2Sec2x

### 11th grade Algebra 2/ Trig

The expression log 10^(x+2)- log 10^x is equivalent to???

### trig

unsure how to find phase shift,vertical shift of y=-2cos(x+3.14/4)+5

### trig

determine the coterminal angle between -360 and 360 for -540

### trig

How do you find the exact values of sin(u/2), cos(u/2), and tan(u/2) of tan(u)=-5/8

### trig

How do you convert polar coordinates to Cartesian coordinates? And vise versa.

### trig

tan(theta)=(7/24), sin(theta)<0 find cos(2theta)

### Trig

Tan theta 12/5 ,pi <theta<3pi/2 Find sin 2theta

### trig

If cscx=2 and x greater 90 degrees and x less than 180 degrees, then sin x/2 =

### trig

Plot the point and then find three representation of the point (3,2pi/3)

### trig

Suppose that sin x = 1/5 and cos y = 2/3, and x and y are each angles in Quadrant 1. Determine sin(x+y).

### trig

let sin theta = -7/25 with theta in QIV find sec (2theta)

### trig

True or false? If A and B are angles of a triangle such that A > B, then cos A > cos B.

### trig

angle x lies in quadrant 3 and cos(x)=-.6. Find cos(3pi/2-x)

### trig

an angle 30 with the distace of 24km and an angle of elevation of 45 with the distance of 15km.

### trig

how do you solve 2nd cos 6/11 (my calculator doesn't have 2nd function0

### trig

Verify that each trigonometric equation is an identity tan^2+1/sec Î± =sec Î±

### trig

Find sin(2theta) if tan of theta = 7/24, pi < theta < 3pi/2 ?

### trig

Derive the identity 1 + cot ^2 theta = csc^2 theta by dividing x^2 + y^2 = r^2 by y^2

### trig

1.Ifg(x)=cos4x,find g'(pie/24). 2.Differentiate y=csc^2 pie*x

### trig

To the nearest degree, determine the measure of <X for each value of tan X if the tan X = 0.25

### Trig

Solve the equation in the given domain cos 4x + cos 2x = 0, 0<(or equal to) x < pi

### trig

A and B are acute angles such that cosA =3 over 5 and cosB =12 over 13

### trig

Prove that the statement is an identity: (tanx/cscx)=(1/cosx)-cosx

### Trig

what quadrant is this in and please explain... sin theta < 0, cos theta > 0

### trig

Please explain to me how to get this -- what quadrant tan theta < 0, sin theta < 0 is in.

### trig

Find y if the point (7, y) is on the terminal side of θ and cos(θ) = 7/25

### trig

If csc theta = 2, then what is theta approximated to 4 decimal points? RADIANS

### math/cal/trig solve for t

solve for t: 0=4sin(2t)cos(2t)-sin(2t)

### trig

If sec theta = radical 5, what is the exact value of cos theta

### trig

If sec theta = radical 5, what is the exact value of cos theta

### trig

find the single term of cos^2 4theta - sin^2 4theta

### Precalc/Trig

Find all values of x, 0<x<(pi/2) for which (1/( root 3))<cotx<(root 3)

### trig

Find the Opposite of the right angle where the angle is 61 degrees and the Adjacent is 10 cm.?

### Trig

The point P(3, 4) is on the terminal side of θ. Evaluate tan θ. 3/4 3/5 4/3 4/5

### Trig

How do I prove that tan(x/2) =( plus/minus) sqrt(1-cos(x/1+cos(x))

### Trig

Simplify (sin^2)*(67.5deg) - (cos^2)*(67.5deg) and then evaluate exactly.

### Trig

Verify that each trigometric equation is an identity. 1/1-sinx + 1/1+sinx = 2 sec^2x

### Advanced Functions/Trig

Prove the identity: cos^4 x + sin^4 x = 1 - (1/2)sin^2 (2x)

### trig, math

In a right triangle with g the right angle, b = 86.5 and c = 125.8. What is β ?

### trig

Find all solutions in the interval [0,2pi]. sin 2x + sin x = 0

### math trig

a triangle has a measured of hypoteneuos 15 and an adjacent of 10 solve for the triangle.

### Trig

Given sin x = 5/13 and 0 < x < pi/2 find the value of sin(π − x). 12/13 5/13 -12/13 -5/13

### Pre-Calc/Trig...

Help me please. Simplify 1. √-36 2. -√-625

### trig

If each leg has length 5 meters, what are the lengths of the other leg and the hypotenuse

### Trig

Solve for t algebraically: inverse cos(t) = inverse sin(t). Where do I start?

### Trig

Is a triangle that has sides which measure 8, 15, and 17 a right triangle? Justify your answer, ie,

### trig

sin2piex-cos5piex Is this a sinusoid? No. because 2 pie x and 5 pie x are not the same/equal.?

### math

Trig Identities prove sinx+1 \ 1-sinx = (tanx+secx)^2

### trig

convert 80 degrees into radians 80 deg *2PI rad/360 deg = ?

### Trig

Find the area of ABC if A=56 degrees, b=20ft, and c=12ft. 1/2(20)(12)sin56 1/2(240)sin56 99.5

### Trig

Verify that (secx/sinx)*(cotx/cscx)=cscx is an identity. (x=theta BTW)

### trig

If sinx = -3/5, tan x > 0, sec y = -13/5 and cot y < 0, find the following: a. csc(x + y) b. sec (x - y) How do I get the answers of a. -65/33 b. -65/16 Thank you

### trig - identies

Assume that A and B are in standard position and that sin A = 1/2, cos A >0, tan B = 3/4, and sinB<0 Cos (A-B)

### Trigonometry

Can you please help me solve this trig equation for 0 ≤ x ≤ 2π? 9sin^2(x)-6cos(x)-10=0 Thank you!

### Trig

Rules of Logarithms: Can someone explain how to do: 1) e^(2(ln)(x)) 2) e^(-lnx) I know the rules I just don't understand how they apply.. thanks!

### trig

1/sinx = sinx+cosxcotx it's a proof and I have to make them equal to each other. Please help!

### Trig Proofs

Please Help: please solve this proof: cosx- cosy = -2sin(x+y/2)sin(x-y/2)

### trig

Given that sin(5x-28)degree=cos(3x-5),0 lessthan x lessthan 90degree,find the value of x.

### trig

find the fundamental solution set (FSS) for(cos2θ)(tanθ+1)=0

### Trig

Given that tan(pi/2) = a. Express tan(x) and sin(x) in terms of a. Hint: Use the fact that x = 2.(pi/2)

### trig

given that tan(x/2)=a. Express tan(x) and sin(x) in terms of a. Hint: use that fact that x= 2*(x/2)

### TRIG

Use the cofunction of a complementary angle. PLEASE HELP ME! tan θ = cot (30° + 5θ)

### Trig.

In right triangle ABC, C is the right angle and sinA=(radical 3/2). What is the value of csc B?