If 0 π/2, show that (tan x+sin x)1/2 + (tan x- sin x)1/2=2(tan x)1/2 cos( π/4-x/2)
If 0 π/2, show that (tan x+sin x)1/2 + (tan x- sin x)1/2=2(tan x)1/2 cos( π/4-x/2)
Varun Ramesh , 9 Years ago
Grade 11
Trigonometry> If 0 π/2, show that (tan x+sin x) 1/2 + (...
1 AnswersVikas TU
Last Activity: 9 Years ago
Taking L.H.S
(tan x+sin x)1/2 + (tan x- sin x)½
Write tanx = sinx/cosx and then take L.CM. for all
Write tanx = sinx/cosx and then take L.CM. for all
final eqn. will become,
root(sinx/cosx)*root(1+cosx/1-cosx) => root(tanx)*(1 +cosx)/sinx
Now apply the formulae sor sin2x and cos2x just for in the form sinx and cosx
x will be in x/2. thus.
now u can do further.
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Other Related Questions on trigonometry
In ABC, if cot A+cot B+cot C = cosecA cosecB cosecC, then prove that ABC is right angle triangle.
In ABC, if cot A+cot B+cot C = cosecA cosecB cosecC, then prove that ABC is right angle triangle.
trigonometry
1 Answer Available
Last Activity: 2 Years ago
- Find the general solution of equation tan3∂=cot2∂
For all angles between -720 and +720
- Find the general solution of equation tan3∂=cot2∂
For all angles between -720 and +720
trigonometry
0 Answer Available
Last Activity: 3 Years ago
To prove : Cosec(45 degree - A)Cosec(45 degree + A) = 2SecA
To prove : Cosec(45 degree - A)Cosec(45 degree + A) = 2SecA
trigonometry
0 Answer Available
Last Activity: 3 Years ago
cos^2 13ºcos^2 47º+cos^2 73º =? …..................
cos^2 13ºcos^2 47º+cos^2 73º =? …..................
trigonometry
0 Answer Available
Last Activity: 3 Years ago
Derive a formula for the area of the triangle, given b, A, B, and C. That is, derive the formula: (b^2sinAsinC)/(2sinB)
Derive a formula for the area of the triangle, given b, A, B, and C. That is, derive the formula: (b^2sinAsinC)/(2sinB)
trigonometry
0 Answer Available
Last Activity: 3 Years ago