May 22, 2017 · See full process below. Let 2tan^-1 (1/5)+tan^-1 (1/7)+2tan^-1 (1/8)=a Let theta=tan^-1 (1/5) and phi=tan^-1 (1/7) and psi=tan^-1 (1/8) Then tantheta=1/5 and tanphi=1 ...

Explanation: Use the trig identity: #tan (a + b) = (tan a + tan b)/ (1 - tan a.tan b)# Call t = (x/2) and develop the left side #LS = tan (t + pi/4) = (tan t + tan ...

Polar coordinates are (sqrt8,pi/4) Let polar coordinates be (r,theta) and Cartesian co ordinate is (2,2) :. x=2,y=2. We know x=r cos theta and y=r sin theta :. 2=r cos theta; (1) and 2=r sin theta; (2) …

Slope of QR=-1 rArr "Slope of "PM=1=tan (pi/4). Now, to find P,we use the following very useful Result:- Result :- On a line l, passing through (x_0,y_0) & making an angle theta with the +ve X-axis, the …

Could you demonstrate this equation?! And thanks you btw! 3arctan (2-sqr (3))=arctan1/2 + arctan1/3 Trigonometry

x=pi/4+k * pi for all k in ZZ (see below for possible additional solution) If we assume that "cost" (x) != 0 then color (white) ("XXX")"cost" (x)="cost" (x)xxtan (x) implies color (white) ("XXX")tan (x)=1 color …

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Q&A and Videos that make learning easy. Math, History, Chemistry, Algebra, Calculus, Biology and more.

equation of line is 6x - 6y + 7 = 0 Expressing it in the slope intercept form y=mx+c where m=tantheta is slope of the line Dividing both sides by 6 and rearranging we get (6x - 6y + 7 = 0)/6 =>y=x -7/6 …

Questions and Videos on Graphing Inverse Trigonometric Functions, within Trigonometry