If x cos ๐œฝ + y sin ๐œฝ = a and x sin ๐œฝ โ€“ y cos ๐œฝ = b, prove that ๐’‚^๐Ÿ + ๐’ƒ^๐Ÿ= ๐’™^๐Ÿ + ๐’š^๐Ÿ. CBSE 2024

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If x cos ๐œฝ + y sin ๐œฝ = a and x sin ๐œฝ โ€“ y cos ๐œฝ = b, prove that ๐’‚^๐Ÿ + ๐’ƒ^๐Ÿ= ๐’™^๐Ÿ + ๐’š^๐Ÿ.
CBSE 2024

MATHS EDUCATOR - ASHISH SIR
STD :10TH MATHEMATICS
CHAPTER 8: INTRODUCTION TO TRIGONOMETRY
MOST IMP QUESTIONS
  1. Math Educator - Ashish Sir
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If ๐’™=๐’„๐’๐’”๐œฝ+๐’Š๐’”๐’Š๐’๐œฝ show 0:06:43

If ๐’™=๐’„๐’๐’”๐œฝ+๐’Š๐’”๐’Š๐’๐œฝ show that ๐’™^๐’+ ๐Ÿ/๐’™^๐’ =๐Ÿ๐œ๐จ๐ฌ๐ง๐œฝ and ๐’™^๐’โˆ’ ๐Ÿ/๐’™^๐’ =๐Ÿ๐ข๐ฌ๐ข๐ง๐’๐œฝ | De Moivres Theorem Examples...

If z = 0:03:50

If z = cos ฮธ + i sin ฮธ then z^n+1/z^n = 2 cos nฮธ and z^n -1/z^n = 2 i sin nฮธ || Complex Numbers

If `x\ costheta=y 0:03:50

If `x\ costheta=y cos(theta+(2pi)/3)=z cos(theta+(4pi)/3)` , then write the value of `1/x+1/y+

If x = 0:04:08

If x = a cosฮธ and y = b sinฮธ, then bยฒxยฒ + aยฒyยฒ = | rd sharma class 10 solutions | Trigonometric...

If x cos 0:11:03

If x cos ฮธ = y cos (ฮธ + 2ฯ€/3 ) = z cos ( ฮธ + 4ฯ€/3), then find the value of xy + yz + zx #iitjee...

If x/a cosฮ˜+ 0:02:19

If x/a cosฮ˜+ y/b sinฮ˜= 1 and x/a sinฮ˜ - y/b cosฮ˜= 1. Prove that xยฒ/aยฒ + yยฒ/bยฒ = 2

If x cos 0:04:55

If x cos ๐œฝ + y sin ๐œฝ = a and x sin ๐œฝ โ€“ y cos ๐œฝ = b, prove that ๐’‚^๐Ÿ + ๐’ƒ^๐Ÿ= ๐’™^๐Ÿ + ๐’š^๐Ÿ. CBSE 2024...

SAQ Video 1 0:04:26

SAQ Video 1 || 16) If x+iy = 1/ 1+cos theta+i sin theta then, show that 4xยฒ-1=0

Why Sin (90-theta) 0:02:08

Why Sin (90-theta) = Cos (theta)?

If ` x 0:03:22

If ` x =a (cos theta +theta sin theta ), y =a (sin theta -theta costheta ) ,then (dy)/(dx) =`

If x+1/x=2 cosโกใ€–ฮธ,ใ€— 0:05:50

If x+1/x=2 cosโกใ€–ฮธ,ใ€— then x is equal to

If `x*costheta=y*cos(theta+(2pi)/3)=2.cos(theta+(4pi)/3)` ,then 0:04:44

If `x*costheta=y*cos(theta+(2pi)/3)=2.cos(theta+(4pi)/3)` ,then evaluate `xy+yz+zx`.

An interesting trigonometry 0:03:14

An interesting trigonometry problem| if sin theta/x = cos theta/y then sin theta - cos theta = ?

If x.Cosฮธ=y.Cos(ฮธ+2ฯ€/3)=z.Cos(ฮธ+4ฯ€/3) Find 0:04:33

If x.Cosฮธ=y.Cos(ฮธ+2ฯ€/3)=z.Cos(ฮธ+4ฯ€/3) Find value of 1/x+1/y+1/z

28. If x 0:02:40

28. If x sin 3 ฮธ + y cos 3 ฮธ = sin ฮธ cosฮธ and x sin ฮธ =y cos ฮธ, then x2 + y2 is equal to (a) 0...

If x sin^3 0:09:05

If x sin^3 ฮธ+ycos^3 ฮธ = sinฮธcosฮธ and xsinฮธ = ycosฮธ, prove that x^2+y^2 = 1.

If for real 0:02:40

If for real values of x, cosฮธ=x+1/x, then (A) ฮธ is an acute angle (B) ฮธ is right angle (C) ฮธ is a......

If `x` is 0:03:17

If `x` is any real number then show that `cos theta` cannot be equal to `x+ 1/x.`

If `x = 0:02:28

If `x = a cos theta` and `y = b sin theta`, find `(dy)/(dx)`

If `ax/(cos theta) 0:04:19

If `ax/(cos theta) + by/sin theta = a^2 - b^2, ``ax sin theta/ (cos^2 theta) - by cos theta/(si...

Why is cos(180 0:00:44

Why is cos(180 - theta) = -cos(theta) and sin(180 - theta) = sin(theta)?

If x = 0:12:27

If x = a (cosฮธ + log tanฮธ/2) and y = a sinฮธ, show that the value of dยฒy/dxยฒ at ฮธ = ฯ€/4

If x cos 0:02:22

If x cos ฮธ โ€“ y sin ฮธ =โˆš( xยฒ + yยฒ) and ๐ถ๐‘œ๐‘ ยฒโฌ/aยฒ + Sinยฒโฌ/bยฒ=1/xยฒ+yยฒ

If xsin^3 ฮธ+ycos^3 0:04:06

If xsin^3 ฮธ+ycos^3 ฮธ=sinฮธ cosฮธ and x sinฮธ=y cosฮธ then prove that x^2+y^2=1