31 Answered Questions for the topic Sin

Sin

26d

Which expressions are equivalent to −tan⁡ θ?

1) Which expressions are equivalent to −tan⁡ θ?There may be more than one correct answer. Select all that apply.a) 1/cot(−θ)b) 1/cotθc) tan θd) −1/cotθe) −1/cot(−θ)f) tan(−θ)2) What is the correct... more
Sin

26d

If cos x=8/17, and 3π2<x<2π, what is sin(x−π)?

Sin

06/27/19

If Tan^2(t)-Sin^2(t)=Sin^a(t)/Cos^b(t), then the positive power a= ALSO the positive power b=

So, I know the first two stepssin^2(t)/cos^2(t) -sin^2(t)sin^2(t)-sin^2(t)cos^2(t)/(cos^2(t)I have no idea what to do after this? I looked and it said to factor but I have no idea why you factor... more
Sin

03/19/19

What is the difference between إِثْم and ذَنب and سَيِّئَة which refer to sin?

There are a number of Arabic words in Quran that refer to sin like: إِثْم and ذَنب and سَيِّئَة. *I am looking for the difference between them and their usage.*
Sin

09/13/18

Find all angles θ between 0° and 180° satisfying the given equation sin(θ) = 1/8

This is a trig question my math teacher gave and i am confused. I thought the answers were 4.2 and 172.8
Sin

08/07/17

Establish the identity sin ( π/2 + Ø) = cos Ø

Which of the following four statements establishes the identity?   A.) sin ( π/2 + Ø) = sin π/2 sin Ø+cos π/2 cos Ø=(0)sinØ+(1)cosØ=cosØ B.) sin ( π/2 + Ø) = sin π/2 sin Ø-cos π/2... more
Sin

01/05/17

Find the missing angle

Find the missing angle below for 0°≤Ø≤90°   sinØ=√2/2
Sin

11/17/16

Sin and Cos functions

Without a calculator, find the exact value of:   a) sin(120)   b) cos(-3Π/4)
Sin

06/10/16

(sinx)^2=2-2cosx

Find all solutions of the equation in the interval [0,2pi).   (sinx)^2=2-2cosx   Write your answer in radians in terms of pi
Sin

02/09/16

Find cot(x) and sin(x), if cos(x)=-(1/5) and tan(x)<0

I really need a lot of help in math, it's my worst subject. My best is English, but that's not important.
Sin

01/13/16

Graphing Trig. Functions & Inverses

Evaluate In degrees:   1. Sin^-1 (-2pi)    2. arctan (- square root 3/3)   3. sin (cos^-1(- square root 3/2)      Evaluate in Radians   1. Arctan (-1)   2. cos^-1 (- 1/2) 
Sin

11/18/15

Solving For X In The Interval

Solve for x in the interval...   0<x<2π: 3sin2(2x+1)+2sin(2x+1)-1=0   My teacher says there should be 6 answers.  I have a TI-84 calculator, so maybe there's a way to plug this in to find... more
Sin

11/18/15

Solve For All Values of X

Solve for ALL values of x in the real number system.  If an EXACT solution does not exist, round your answers to the nearest hundredth.   sin2x = sinx
Sin

11/18/15

Find the tension in each cable necessary to keep the block from moving (either sideways or downward)

A 900-lb block is being suspended and held stationary by two steel cables as shown.  The first cable (to the left of the block) makes a 70 degree angle with the horizontal, while the second cable... more
Sin

11/17/15

Through what angle does the observer see the pole?

One end of a 9.3 foot pole is 13.6 feet from an observer's eyes, and the other end is 17.4 feet from the observer's eyes. Through what angle does the observer see the pole?
Sin

11/12/15

Convert from Polar to Rectangular Form

Convert the following from Polar to Rectangular Form:   r=3sinΘ(Theta)-4cosΘ(Theta)
Sin

11/11/15

Evalulate Basic Problems

My professor said for this problem to use inverse trig functions, half angle, and double angle identities.   Evaluate:   tan(2sin-1(4/5))   Please list the answer step by step and next to... more
Sin

11/11/15

Prove Basic Problems (Dealing with Cos & Tan)

Prove:   1-cos2x/1+cos2x=tan2x   Please include step by step and next to each step, please include the identity used! :)
Sin

11/11/15

Prove Basic Problems (Dealing with Sin, Cos, Tan)

Prove:   SQUARE ROOT OF (3cosx+4sinx)2+(4cosx-3sinx)2 = 5   Please include step by step and the identities used next to each step! :)
Sin

11/11/15

Proving Basic Problems (Dealing with Sin, Cos, Tan)

Prove:   sinx/sinx+cosx)=tanx/1+tanx   If you could, please list the steps and include the identities next to the steps.
Sin

11/10/15

Prove: (secx+tanx)^3(secx-tanx)^4=1-sinx/cosx

Prove: (secx+tanx)^3(secx-tanx)^4=1-sinx/cosx   Please show the steps and prove this by making both sides equivalent to each other.  Also, please include which identities follow with each step! :)
Sin

10/28/15

Using the pythagorean identity, find the value of sin? and tan? if cos?= -1/2

Using the pythagorean identity, find the value of sin⊗ and tan⊗ if cos⊗= -1/2
Sin

10/28/15

Explain why sin?^2 + cos?^2=1

Explain why sin⊗2 + cos⊗2=1
Sin

05/25/15

explain why sin 30 degrees is 0.5000

Give an explanation.
Sin

05/08/15

sin^2x=5 has how many solutions on the interval 0 less than or equal to x less than or equal to 2pi?

A.0 B.2 C.1 D.Infinity   I need a step by step on how to do this.
1

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