Respond to this Question
Similar Questions

trig
prove that :tan20 tan30 tan40 =tan10 
campridge trigonometry
prove that ; tan20 . tan30 . tan40 = tan10 
PreCalculus
I need help on these problems they are from my study guide and i don't have a clue on how to do these 3 problems and if anyone can show the steps and somewhat explain the steps so i can do it myself next time. 1.) sin25‹cos35‹sin‹35 … 
precalc
Suppose that z1=68i. Find: A. The Trig Form of the complex number z1, where your theta is in degrees. B. The Trig form of z1*z2, where z2=5[cos(60degrees)+isin(60degrees)] C. The Trig Form of (z1)^4 
trig
tan200(cot10tan10) 
maths
Tan100+4sin100=? As tan(90+10)+4sin(90+10) cot10+4cos10 Aftr that i don't know what to do 
Math
prove: tan10+tan70+tan100=tan10.tan70.tan100 
calculus
1. what trig function has an amplitue of 1 and negative values for angles between π/2 and π? 
Trigonometry
how do i evaluate this? 1+tan 200(degrees) tan 80(degrees)/tan200(degrees)tan 80(degrees) 
Math
Solve without the use of a calculator: sin20(tan10+cot10) I know it should equal two but I don't know how to get there