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trigonometry math
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trigonometry math Questions and Answers
What is the sum of functions sin 135+cos150? please explain the sum
I need to find the solution of equation sin^3x*sin3x+cos^3x*cos3x=0
What is sin(x+y) if sinx+cosy=1/4 and cos x+siny=1/2 ?
how to write cos 2x in terms of cos x?
trigonometry Prove that cos2x(1 + tanx*tan2x) = 1
Find all solutions of the equation in the range [0;pi] . Identify solutions of the equation in [0;pi] . 1 + cosx + cos2x = 0
Determine the trigonometric form of z=-2i.
Simplify the fraction [cosx*sin(2x)-2sinx]/sin^2 x*cosx=?
Prove that (sin x)^2*[1 + (cot x)^2] = 1
show that cos3B+cosB=2(cos2B)cosb.
Solve the equation if x is in interval (0;2pi) cos3x=cosx
Find the number of the solutions of equation 99sin^2x-101=-sin^2x.
Solve for x in (0 ; 360) : 2 tan x - 1 = -tan (-x).
What is cos x if tan x=6/11?Solve using right triangle
solve the equation (sin B)^2- 3sin B +2 =0 where 0 ≤ B ≤ 2π
What is the solution of the equation 2six*sin3x-cos4x=0?
Determine the values of x, 0<x<2pi, if the identity is true: cos^6 x=1-sin^6 x
What is t if identity cos2x+2sin^2 (x)+t=0 is true?
equation . Find x if sin^2x=1/4 .
prove tan(a+b)=(tan a+tanb)/(1-tana*tanb)
Verify the identity 1+sinx=cos(90-x)+ cot45
Given the right triangle ABC, where A=90 degrees, calculate the expression: E=cosB/sinC+ cosC/sinB
If the identity 1-2sin^2a=2cos^2a+m is true, what is m?
Derive tan(a+b), using sin (a +b) and cos(a +b).
What is x if 100sinx-99cosx=0?
Prove the following identity: (sqrt (1 - (cos^2 ) t ) * sqrt ((sec^2) t - 1)) / cos t = (tan^2) t
Prove the following identity: (tan^4) t + (tan^2) t + 1 = (1 - (sin^2) t * (cos^2) t) / (cos^4) t
find the angle x if tan^2 x-4sec x+5=0?
Prove the following identity: (csc^2) x = (2 sec 2x) / (sec 2x - 1)
Calculate sin2a if sina+cosa=1/3
Given sinx=1/4 and cosx=3/4 what is sec2x ?
Find the exact solutions of the equation cos 2a=square root(1-sin^2 a), 0<a<180.
Find solutions of the trigonometric equation sin 12x+cos 6x=0?
What is the value of expression cos^2(x-y)+cos^2(x+y)-cos2x*cos2y?
Evaluate the trigonometric sum sin(pi/3)+sin(2pi/3)+sin(3pi/3)+sin(4pi/3) .
What is tan(pi/ 7) + cot(pi/2 - pi/6) / (1+ tan(-pi/7)*tan(pi/6))
What are the zeros of the function f(x)=sinx+cosx found in interval (0,pi)?
A triangular plot has a frontage on the sea of 100 yards. The boundary lines running from the beach make angles of 60 degrees and 50 degrees respectively on the inner side of the lot in line with the shore line. Determine the distance of the dividing line from the vertex of the triangle to the opposite side along the shore line to divide the lots into equal parts.
Solve for x the following 3cos(3x-1)=0.
cos problem Given sinx/cosx=2 determine cos^2x.
Prove AB^2+AC^2=2BM^2+2AM^2 for the diagram at http://i.imgur.com/hOYs3.jpg
I wish to prove cos^2x-sin^2x=2cos^2x-1.
Prove that : sin 3a+sin a+sin 5a/cos 3a+cos a+cos 5a=tan 3a
Verify the inequality : sinx<1/2cosx.
Verify if sin25+sin35=cos5
Prove that cos x+sinx /cosx-sinx equal to 1+sin2x/cos2x