# Cos pi 2 = 0

Mar 05, 2021 · By the definition of the functions of trigonometry, the sine of pi/2 is equal to the y-coordinate of the point with polar coordinates (r,theta)=(1,pi/2), giving sin(pi/2)=1. Similarly, cos(pi/2)=0, since it is the x-coordinate of this point.

cos(pi/2) is one such occasion: In (real) Mathcad, it is possible to set the zero threshold, which will cause numerical resuls to show as 0 when they are close to zero within that threshold. The default for the zero threshold is '15' which sets that any value within -10^-15 to 10^-15 will be shown as zero. Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history In HW item #5, the final answer involves cos(pi/2) = 0 O cos(pi/2) = 1 O sin(pi/2) = 0 Express in terms of sine, cosine, or tangent of one angle. Then find the exact value.

Express 2.348 sin θ − 1.251 cos θ in the form −R cos ( θ + α) , where 0 ≤ α < π/2. Find sin(u-pi), cos(u-pi), sin(u-pi/2), cos(u-pi/2) I tried solving this question but I could not get the right answer. Here are the step I tried for solving this problem. cos(u) 5/13 = x/r Use pythagoream theorem to find sin(u) x=5, r=13 r^2=x^2+y^2 13^2=5^2+y^2 169=25+y^2 sqrt(144)=y^2 ==> y=12 sin(u)= -12/13 sin(u-pi) =(-12/13)-(0/1) The definite integral is given by: {eq}\displaystyle \int_0^{\frac{\pi}{2}} \cos (x) \sqrt{ 1 + \sin (x) } \, dx {/eq} Let us assume that: {eq}\begin{align*} 1 + \sin If cos-1 x + cos-1 y = π, then, what is the value of sin-1x + sin-1y ? (A) 0 (B) π / 2 (C) π (D) 2 π .

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Math.PI is not a 100% accurate representation of pi, simply because pi is irrational and floating point numbers only go so far. So due to rounding errors, you get extremely tiny numbers (your numbers are #.#####e-16 and #.#####e-17, which are tiny).

### Explanation: The equation cos(θ) = 0 verifies for all θ = π 2 +2kπ with k = {0, ± 1, ± 2,..} Then π 2 x − 1 must be of the form π 2 +2kπ. Equating. π 2 x − 1 = π 2 + 2kπ Solving for x we get. x = 2 +(1 +4k)π π,k = {0, ± 1, ± 2,..} Answer link.

For math, science, nutrition, history In mathematics, trigonometric substitution is the substitution of trigonometric functions for other expressions. Returns the cosine of the specified angle. The following example uses Cos to evaluate certain trigonometric identities for selected angles. // Example for the trigonometric Math.Sin( double ) // and Math.Cos( double ) methods. Oct 24, 2015 · Get an answer for 'f(t) = e^sin(t) cos(t), [0, pi/2] Find the average value of the function on the given interval.' and find homework help for other Math questions at eNotes Get an answer for ' Find the average value of cos t on the intervals [0, pi],[0,(pi/2)], [0,(pi/4)],[0, 0.01]. please answer # A in the following question: (a) Find Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Math.PI is not a 100% accurate representation of pi, simply because pi is irrational and floating point numbers only go so far. So due to rounding errors, you get extremely tiny numbers (your numbers are #.#####e-16 and #.#####e-17, which are tiny). Nothing you can do about it but accept that 0.000000000000000006 is close enough to 0.

California man leads police officers on epic 6-hour chase To calculate cosine online of pi/6, enter cos(pi/6), after calculation, the result sqrt(3)/2 is returned. Note that the cosine function is able to recognize some special angles and make the calculations with special associated values in exact form. So you may get results close to, but not exactly, zero on occasions. cos (pi/2) is one such occasion: In (real) Mathcad, it is possible to set the zero threshold, which will cause numerical resuls to show as 0 when they are close to zero within that threshold. Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history π 2 represents a quarter of a circle (90 ∘) wich corresponds to (0, 1) on the unit circle, i.e. I understand that in Python sin(pi) and cos(pi/2) won't produce 0, but I'm making calculations with matrices and I need to use those values. prove cos(x - pi/2) = sinx 2\sin ^2 (x)+3=7\sin (x),\:x\in [0,\:2\pi ] 3\tan ^3 (A)-\tan (A)=0,\:A\in \: [0,\:360] 2\cos ^2 (x)-\sqrt {3}\cos (x)=0,\:0^ {\circ \:}\lt x\lt 360^ {\circ \:} trigonometric-equation-calculator. cos2x+sinx=0. en. The exact value of cos(π2) cos ( π 2 ) is 0 0 . 0 0.

The trigonometric functional values of angles coterminal with 0, π/2 , π, and 3π/2 are the same as those above, and the   Cos -Pi/2: All about cos minus Pi/2 radians, incl. the trigonometric identities. Besides The cos of -pi/2 radians is 0, the same as cos of -pi/2 radians in degrees. Jul 15, 2020 cos2(0)+cos2(π6)+cos2(π3)+cos2(π2). check-circle.

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