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Perimeter of rectangle is ##2 1/9## ##m##. Perimeter of a rectangle whose two sides are ##l## and ##b## is ##2xx(l+b)## In the given case ##l=2/9## m […]

##112.47^0## C= A-B= – = < 12-2> Angle between A and C would be given by ##cos theta=(A*C)/(|A| |C|)## ##cos theta = (3*1 +(-1)*2 + 3(-2))/ […]

4225 square feet. First divide 260 by four to see what the sides are since they’re all congruent. ##2604=65## Then since area is ##a=lw## multiply 65 […]

Surface Area of a Trapezoidal Prism = ##a(l + h) + b(l + h) + lc + ld## Surface Area of a Trapezoidal Prism = ##a(l […]

Find arcsin 1.5 Impossible –> sin x < 1.

Find ##arccos(sin (pi/6))## Ans: ##+- pi/3## ##sin (pi/6) = 1/2## therefor ##arccos (sin(pi/6)) = arccos (1/2)## On the trig unit circle ##cos x = 1/2## –> […]

Perimeter of the triangle is ##7.40## unit Side##AB=sqrt((1-2)^2+(3-6)^2)=sqrt10=3.16## Side##BC=sqrt((2-0)^2+(6-4)^2)=sqrt8=2.83## Side##CA=sqrt((0-1)^2+(4-3)^2)=sqrt2=1.41## Perimeter of the triangle is ##3.16+2.83+1.41 =7.40##unit[Ans]

##sin (pi/4) = sqrt(2)/2## is the length of one side of the isoceles right angled triangle with sides ##sqrt(2)/2## ##sqrt(2)/2## and ##1## which has internal angles […]

Hi. By definition ##tantheta=sintheta/costheta## with ##theta## being the angle. But be careful that makes us wish to say that: ##tantheta=sintheta/costheta=1/2=>sintheta=1 and costheta=2## and that is not […]