9,261 Answered Questions for the topic trigonometry

Trigonometry Precalculus

11/05/22

Find sin2x, cos2x, and tan2x if cosx= -1/sqrt5 and x terminates in quadrant 3
Find sin2x, cos2x, and tan2x if cosx= -1/sqrt5 and x terminates in quadrant 3. Hello, I'm stuck on this one problem and haven't been able to figure it out how the past minuite. Can anyone help me?
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Trigonometry Precalculus

11/05/22

Find sin2x, cos2x, and tan2x if sinx = -3/sqrt10 and x terminates in quadrant 3.
Find sin2x, cos2x, and tan2x if sinx = -3/sqrt10 and x terminates in quadrant 3. I've been stuck on this and don't know how to go about it.
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Trigonometry Math Geometry

11/05/22

Answer the following with solutions:
A 14 cm secant segment and 9 cm tangent segment intersect at the exterior of a circle. Find the length of the external segment of the secant.
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Trigonometry Math Geometry

11/05/22

Answer the following with solutions:
A secant and a tangent segment intersect at the exterior of a circle. The chord which is a part of the secant is three times as long as the tangent and the external segment of the secant is 12 cm.... more
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Trigonometry Math Geometry

11/05/22

The center C of the larger circle lies on another circle in which the diameter coincides with chord AB of the larger circle. Find the area of the shaded region if AB measures 12 cm.
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Trigonometry Math Geometry

11/05/22

Given a circle in which the diameter AB equals 9 cm. If two points C and D lie on the circle and ∠ABC = 20° and ∠BAD = 60°, find the length of the major arc CD.
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Trigonometry Math Geometry

11/05/22

On a circle of radius 120 cm, the arc intercepted a central angle of 5π/4 . What is the length of the arc?
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Trigonometry

11/04/22

Use identities to find the value of the expression.
If sin(x)=0.49, find cos(pi/2-x)
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Trigonometry

11/04/22

Evaluate using the Pythagorean identities.
FInd sin x and cos x if tan x= 1/2 and sinx>0
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Trigonometry Physics

11/04/22

Trig Extra Credit Question
how would you solve for theta in the problem cos(theta)* sin(theta)= 0.14?
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Trigonometry

11/04/22

The coordinates of the point P(−2, 7) on a terminal arm of an angle θ, in standard position, are given, where 0^0 ≤ θ ≤ 360^0
a) Determine the exact values of sinθ, secθ, and cotθ.b) Determine angle θθ.c) What is the measure of the first negative coterminal angle?
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Trigonometry Math Precalculus

11/04/22

in the triangle ABC, AC=19, angle C= 55, angle a = 30, find side AB
it said the correct answer is 19sin(55)/sin(95)I don't understand why it wouldn't just be 19sin(55) why is all over sin(95)
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Trigonometry Math Precalculus

11/04/22

if tana=-(√11)/5 and sinb= (2√10)/7 with pi/2 < a,b < pi find the value of cos(a+b)
the correct answer is (15-2√110)/42confused on how exactly to set up solving for this
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Trigonometry Math Precalculus

11/03/22

If sina=-5/8 with 270<a<360 determine sina/2
the correct answer is: (1/4)(sqrt(8-sqrt(39))I'm unsure how they got the eight and the 1/4
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Trigonometry

11/03/22

4sin^2xtanx-tanx=0
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Trigonometry

11/03/22

Verifying Trigonometric Identities
verifysin²θ/(1+cosθ) = (tanθ - sinθ)/tanθ
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Trigonometry

10/31/22

Solve sin ( x ) − √ 3 cos ( x ) = − 1 . Give all the solutions in [ 0 , 2 π ) , then all solutions (use k as an arbitrary integer).
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Trigonometry

10/30/22

Solve for x: Log(base 3)(X) + log(base 3)(x+4) = 8
There are two potential roots, A and B, where A = ?B = ?Is A actually a root? (yes or no)Is Bactually a root? (yes or no)
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Trigonometry

10/30/22

Solve 4 cos( θ )sin( θ ) − 2√3cos( θ ) − 2√3sin( θ ) + 3 = 0 . Give all the solutions in [0 , 360∘) .
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Trigonometry

10/29/22

Trigonometry, modeling with sinusoidal functions question
Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature varies between 38 and 72 degrees during the day and the average daily temperature first... more
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Trigonometry Math Calculus Precalculus

10/28/22

Is my answer correct for a value of x where two (or more) values of y can be assigned in siny=x? Any tips are helpful, thank you!
Provide a specific value of x where two (or more) values of y can be assigned for the example which is not a function:siny=xNote: when I choose x=1, some of the values I get are pi/2, 5pi/2, and... more
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Trigonometry Math Calculus Precalculus

10/28/22

Evaluate the expression logb x/y
Assume logbx=0.39 and logby=0.36. Evaluate the following expression.logbx/y(type an integer or a decimal).
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Trigonometry Math Calculus Precalculus

10/28/22

Provide a specific value of x where two (or more) values of y can be assigned
Provide a specific value of x where two (or more) values of y can be assigned for these two examples which are not functions:a) x2+y2=4b) siny=x
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Trigonometry

10/27/22

Let u be an angle in the second quadrant with sinu = 2 /3 . Then cosu = ......and sin(2u) =........ .
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Trigonometry Math Calculus Precalculus

10/27/22

Evaluating Functions Versus Evaluating Limits of Functions
f(x)= [x-1 when x<0, 1 when x=0, x2-1 when x≥0]For this function, show that f(0) ≠ lim f(x)limx→0
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