рдорд░рд╛рдареА

In the Following, Trigonometric Ratios Are Given. Find the Values of the Other Trigonometric Ratios. `Sin Theta = 11/5` - Mathematics

Advertisements
Advertisements

рдкреНрд░рд╢реНрди

In the following, trigonometric ratios are given. Find the values of the other trigonometric ratios.

`sin theta = 11/5`

рдмреЗрд░реАрдЬ
Advertisements

рдЙрддреНрддрд░

We know `sin theta = "opposite side"/"hypotenuse" = 11/15`

Consider right-angled Δle ACB

Let x = ЁЭСОЁЭССЁЭСЧЁЭСОЁЭСРЁЭСТЁЭСЫЁЭСб ЁЭСаЁЭСЦЁЭССЁЭСТ

By applying Pythagoras

ЁЭР┤ЁЭР╡2 = ЁЭР┤ЁЭР╢2 + ЁЭР╡ЁЭР╢2

225 = 121+ЁЭСе2

ЁЭСе2 = 225 -121

ЁЭСе2 = 104

`x = sqrt104`

`cos = "adjacent side"/"hypotenuse" = sqrt(104/15)`

`tan = "opposite side"/"adjacent side" = 11/sqrt104`

`cosec theta = 1/sin theta = 15/11`

`sec = 1/cos theta = 15/sqrt104`

`cot = 1/ tan theta = sqrt104/11`

 

 

 

 

 

shaalaa.com
  рдпрд╛ рдкреНрд░рд╢реНрдирд╛рдд рдХрд┐рдВрд╡рд╛ рдЙрддреНрддрд░рд╛рдд рдХрд╛рд╣реА рддреНрд░реБрдЯреА рдЖрд╣реЗ рдХрд╛?
рдкрд╛рда 10: Trigonometric Ratios - Exercise 10.1 [рдкреГрд╖реНрда реирей]

APPEARS IN

рдЖрд░рдбреА рд╢рд░реНрдорд╛ Mathematics [English] Class 10
рдкрд╛рда 10 Trigonometric Ratios
Exercise 10.1 | Q 1.04 | рдкреГрд╖реНрда реирей

рд╡реНрд╣рд┐рдбрд┐рдУ рдЯреНрдпреВрдЯреЛрд░рд┐рдпрд▓VIEW ALL [2]

рд╕рдВрдмрдВрдзрд┐рдд рдкреНрд░рд╢реНтАНрди

Given sec θ = `13/12`, calculate all other trigonometric ratios.


State whether the following are true or false. Justify your answer.

sec A = `12/5` for some value of angle A.


State whether the following are true or false. Justify your answer.

cos A is the abbreviation used for the cosecant of angle A.


If 4 tan θ = 3, evaluate `((4sin theta - cos theta + 1)/(4sin theta + cos theta - 1))`


In the following, trigonometric ratios are given. Find the values of the other trigonometric ratios.

`cos A = 4/5`


In the following, one of the six trigonometric ratios is given. Find the values of the other trigonometric ratios.

`cos theta = 12/2`


If `cos θ = 12/13`, show that `sin θ (1 - tan θ) = 35/156`.


if `tan theta = 12/13` Find `(2 sin theta cos theta)/(cos^2 theta - sin^2 theta)`


if `cot theta = 3/4` prove that `sqrt((sec theta - cosec theta)/(sec theta +cosec theta)) = 1/sqrt7`


Evaluate the following

sin 45° sin 30° + cos 45° cos 30°


Evaluate the following

tan2 30° + tan2 60° + tan45°


Evaluate the following

`2 sin^2 30^2 - 3 cos^2 45^2 + tan^2 60^@`


Evaluate the Following:

`tan 45^@/(cosec 30^@) + sec 60^@/cot 45^@  - (5 sin 90^@)/(2 cos 0^@)`


If sin 2A = `1/2` tan² 45° where A is an acute angle, then the value of A is ______.


If sin A = `1/2`, then the value of cot A is ______.


If sin θ + cos θ = `sqrt(2)` then tan θ + cot θ = ______.


Find an acute angle θ when `(cos θ - sin θ)/(cos θ + sin θ) = (1 - sqrt(3))/(1 + sqrt(3))`


Let tan9° = `(1 - sqrt((sqrt(5)k)/m))k` where k = `sqrt(5) + 1` then m is equal to  ______.


If `θ∈[(5π)/2, 3π]` and 2cosθ + sinθ = 1, then the value of 7cosθ + 6sinθ is ______.


Share
Notifications

Englishрд╣рд┐рдВрджреАрдорд░рд╛рдареА


      Forgot password?
Use app×