What is the sin cos and tan of 45? Trigonometry Right Triangles Trigonometric Functions of Any Angle. 1 ...

Sep 29, 2015 · 12*sqrt(2) sin 45=1/sqrt(2) 1/sqrt(2)=12/x x=12*sqrt(2)

Use trig identity: sin (a - b) = sin a.cos b - sin b.cos a Trig table --> #sin 45 = sqrt2/2# and #cos 30 = sqrt3/2#

May 10, 2018 · 0 Yes, it simplifies to give you zero. Now to make our lives easier, it would be better to turn the equation to: cos(45+a)cos(45-a) = sin(45-a)sin(45+a) This way we can resolve both sides without things getting mixed and muddled together. You should be comfortable with your trigonometric identities so by looking at this equation you are able to tell the four identities …

May 30, 2018 · -sin(45) In general, you can remember the fact that, d/dxsin(x)=cos(x) and d/dx cos(x)=-sin(x) So we have, d/dxcos(x) = -sin(x) => d/dxcos(45) = -sin(45) Hence the ...

Nov 14, 2015 · Evaluate sin (-135) Ans: -sqrt2/2 Trig Table of Special Arcs and unit circle give: sin (-135) = sin (45 - 180) = - sin (45) = -sqrt2/2

Jul 23, 2018 · How do you evaluate #sin(45)cos(15)+cos(45)sin(15)#? How do you write #cos75cos35+sin75sin 35# as a single trigonometric function? How do you prove that #cos(x-y) = cosxcosy + sinxsiny#?

Feb 21, 2016 · How do I convert the polar coordinates #3(cos 210^circ +i\ sin 210^circ)# into rectangular form? What is the modulus of the complex number #z=3+3i#? What is DeMoivre's theorem?

May 3, 2015 · Trig conversion table gives: cos 45 = (sqr2)/2 -> sec 45 = 1/cos 45 = 2/(sqr2) sin 45 = (sqr2)/2 -> csc 45 = 1/sin 45 = 2/(sqr2)

Mar 31, 2017 · sin(120^@-45^@)=(sqrt3+1)/(2sqrt2) sin(A-B)=sinAcosB-cosAsinB Here if A=120^@ and B=45^@, we can find sin(120^@-45^@), but we need to know sine and cosine ratios of the two angles.