**Help solving sin2x = cos2x between 0 and 2pi Free Math Help**

Free Pre-Algebra, Algebra, Trigonometry, Calculus, Geometry, Statistics and Chemistry calculators step-by-step... If sin x = -3/5 and pi <= x <=3pi/2, find cos x and tan x.I have the correct answers from the book (-4/5 and 3/4 respectively) but don't know how to work out the question.

**Solutions and explanations to Maths Questions (2)**

Solving Simple (to Medium-Hard) Trig Equations. Easy/Medium Hard. Purplemath . Solving trig equations use both the reference angles and trigonometric identities that you've memorized, together with a lot of the algebra you've learned. Be prepared to need to think in order to solve these equations. In what follows, it is assumed that you have a good grasp of the trig-ratio values in the first... I'm trying to solve a simple integral but the software gives me a wrong answer. Please help me, I'm trying to calculate a lot of integrals but this problem doesn't let me to.

**arc sin( x )+ arc sin (2x) = pi/3 find the value**

3 ? 3. Some simple trigonometric equations Example Suppose we wish to solve the equation sinx = 0.5 and we look for all solutions lying in the interval 0 ? x ? 360 . This means we are looking for all the angles, x, in this interval which have a sine of 0.5. We begin by sketching a graph of the function sinx over the given interval. This is shown in Figure 1. 1 1 sin x 0 90 o180 270o 360... 0 and 360 degrees. Move the terms on the right to the left by subtracting them from both sides. sin 2 x sec x + 2sin 2 x – sec x – 2 = 0. Factor sin 2 x out of the first two terms and –1 out of the second two.

**Solutions and explanations to Maths Questions (2)**

21/03/2010 · Best Answer: sin(3pi/2) is actually sin(2pi/2 + pi/2) = sin(pi + pi/2), so this actually puts it right in between quadrants 3 and 4, not quadrants 1 and 2. Remember that 3pi/2 radians is the same as 270 degrees, the angle that just matches up with the negative y axis. The …... If I factor a 2 from the first two terms and the square root of 3 and a cosine from the second two terms, I'll get: Now I can take the common factor out front: Whew! That actually worked! Okay, now I need to solve the factors. The first factor solves as: This equation is true at x = 60° and, by the symmetry of the tangent curve, also at x = 180° + 60° = 240°. In radians, this is . The

## How To Work Out Sin2 X-pi 3

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## How To Work Out Sin2 X-pi 3

### The graph of `y=2 cos(x-pi/8)` for `0 ? x ? 2pi` The curve `y=2cos(x)` is shown as grey dashed, and the answer after shifting by `pi/8` to the right, is in dark green. Easy to understand math videos:

- This integral is pretty tricky. It's going to require the use of a few trigonometric identities and rules for integration. I'll include definitions or explanations of the rules used at the very end in the case that you would find this helpful.
- 30/09/2018 · Plug your number, which we'll call x, into this formula to calculate pi: x * sin(180 / x). For this to work, make sure your calculator is set to Degrees. The reason this is called a Limit is because the result of it is 'limited' to pi. As you increase your number x, …
- Sin Squared . The graph of (? What values of ? will work? Amplitude, Frequency and Phase . Going from ? to ? The amplitude is halved. (the y values lie between 0 and +1, previously they were between -1 and +1). The frequency is doubled. (we have more complete cycles in the same x distance. The phase is... well we could argue that the phase is changed, but it really only makes sense
- I'm trying to solve a simple integral but the software gives me a wrong answer. Please help me, I'm trying to calculate a lot of integrals but this problem doesn't let me to.

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