31 Answered Questions for the topic 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

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

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.*

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

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

11/17/16

#### Sin and Cos functions

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

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

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.

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)

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

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

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

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?

11/12/15

#### Convert from Polar to Rectangular Form

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

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

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! :)

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! :)

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.

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! :)

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

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.

## Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.

Most questions answered within 4 hours.

#### OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.