SOLUTION: cos x�=sin20� also tan 20�� = cot(x+30)� Sory but i am hopeless at this

SOLUTION: cos x�=sin20� also tan 20�� = cot(x+30)� Sory but i am hopeless at this

Algebra.Com

Question 851123: cos x�=sin20� also tan 20�� = cot(x+30)� Sory but i am hopeless at this
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
for the first problem:
x=arccos(sin(20))=70
for the second:
cot(x)=1/tan(x)
so we can write
tan(x+30)=cot(20)
x+30=arctan(tan(x+30)=arctan(cot(20)
x+30=70
x=40
RELATED QUESTIONS
Hi, I'm stumped on this Trigonometry Proof, {{{ (cos(x)/sec(x)) - (cot(x)/tan(x)) =... (answered by jsmallt9)

This is a trigonometric Identity question I am given the expression of {{{... (answered by stanbon)

can you please prove this identity (tan x - cot x) / (tan^2 x - cot^2 x)= sin x cos... (answered by lwsshak3)

how do i rewrite only one side of this identity ?... (answered by solver91311)

Simplify cos x/sin x *(tan x + cot... (answered by stanbon)

can you please prove this identity (sin x - tan x)(cos x - cot x)=(cos x -1)(sin x... (answered by lwsshak3)

I am given the expression: {{{ sec(x)*((sin(x))/(tan(x))) }}} Which of the following... (answered by math-vortex)

I could use some help with this question. I am prepping for my ACTs, but have really... (answered by stanbon)

Given sec t = -4 and t is in quadrant 3, find the other 5 trig functions of t. At... (answered by lwsshak3)