Posted by Jake on Tuesday, January 24, 2012 at 9:49pm.
Could someone explain the steps for this question.
Simplify the expression
tan(5pi/8)tan(3pi/8)/1+tan(5pi/8)tan(3pi/8)

Math  Jake, Tuesday, January 24, 2012 at 9:51pm
Options are
a) 0
b) 1
c) 1
d) undefined

Math  Steve, Wednesday, January 25, 2012 at 1:17pm
Recall your sum/difference formulas. You have
tan(5pi/83pi/8) = tan(pi/4)
so, (B)
Answer This Question
Related Questions
 Trigonometry  Find the exact value of tan(ab) sin a = 4/5, 3pi/2<a<pi...
 PreCalculus  Hi I need some assistance on this problem find the exact value do ...
 trig  Solve the equation for cos thetatan theta=0 for greater than or egual to...
 math  Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the ...
 math  Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the ...
 Precalculus/Trig 5  Find the exact value of thet following trigonometric ...
 math  use exact values of the sin,cos and tan of (pi/3) and (pi/6)(which I ...
 Trig  Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...
 precalc  Can someone help me find the exact value of 4csc(3pi/4)cot(pi/4)? ...
 Integration  Intergrate ¡ì sec^3(x) dx could anybody please check this answer. ...
More Related Questions