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asin2x +bcos2x=c prove that cot2x=c-a/b-c
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asked
Oct 26, 2019
in
Class XI Maths
by
mkmalla
(
15
points)
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trigonometric functions
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If P is the length of the perpendicular from the origin of a line whose intercept on the axis are a and b, prove that 1/p^2 =1/a^2 +1/b^2 .
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Nov 25, 2018
in
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arun811
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its urgent plzz answer fast !!!
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A point moves so that the sum its distance from (ae, 0) and –ae, 0) is 2a. Prove that the equation to its locus is x^2/a^2 +y^2/b^2 =1. Wherea^2=a^2 (1-e^2).
asked
Nov 25, 2018
in
Class XI Maths
by
arun811
(
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points)
its urgent plzz answer fast !!!
0
votes
2
answers
If sin(θ + α) = a and sin(θ + β) = b , then prove that cos2(α – β) – 4abcos(α – β) = 1-2a2 -2b2.
asked
Feb 17, 2018
in
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by
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0
votes
1
answer
If f( x)= y = ax-b/ cx-a then prove that f (y) = x
asked
Feb 16, 2018
in
Class XI Maths
by
rahul152
(
-2,838
points)
sets
0
votes
0
answers
If in ∆ ABC, cotA+ cotB+cotC=cotx, then prove that, sin^3(x) =sin(A-x) sin(B-x) sin(C-x)?
asked
Jul 11, 2019
in
Class XII Maths
by
Swarna
(
5
points)
trigonometry
trigonometric functions
0
votes
0
answers
If in ∆ ABC, cotA+ cotB+cotC=cotx, then prove that, sin^3(x) =sin(A-x) sin(B-x) sin(C-x)?
asked
Jul 10, 2019
in
Class XII Maths
by
Swarna
(
5
points)
trigonometry
0
votes
0
answers
-2a, a+b, a+c : b+a, - 2b, b+c: c+a, c+b, - 2c prove that 4(b+c)(c+a)(a+b)
asked
Apr 20, 2019
in
Class XII Maths
by
gunja
(
10
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determinants
0
votes
1
answer
If A, B, C are the interior angles of △ABC, prove that tan [(B + C)/2] = cot A/2
asked
Mar 29, 2019
in
Class X Maths
by
muskan15
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trigonometry
0
votes
1
answer
Prove that A(4, 3), B(6, 4), C(5, 6) and D(3, 5) are the angular points of a square.
asked
Feb 28, 2019
in
Class X Maths
by
navnit40
(
-4,939
points)
coordinate geometry
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