рд╣рд┐рдВрджреА

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`

рдпреЛрдЧ
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
  рдХреНрдпрд╛ рдЗрд╕ рдкреНрд░рд╢реНрди рдпрд╛ рдЙрддреНрддрд░ рдореЗрдВ рдХреЛрдИ рддреНрд░реБрдЯрд┐ рд╣реИ?
рдЕрдзреНрдпрд╛рдп 10: Trigonometric Ratios - Exercise 10.1 [рдкреГрд╖реНрда реирей]

APPEARS IN

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

рд╡реАрдбрд┐рдпреЛ рдЯреНрдпреВрдЯреЛрд░рд┐рдпрд▓VIEW ALL [2]

рд╕рдВрдмрдВрдзрд┐рдд рдкреНрд░рд╢реНрди

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

`cos theta = 12/2`


If 3 cot θ = 2, find the value of  `(4sin theta - 3 cos theta)/(2 sin theta + 6cos theta)`.


Evaluate the Following

(cos 0° + sin 45° + sin 30°)(sin 90° − cos 45° + cos 60°)


Evaluate the Following

`4/(cot^2 30^@) + 1/(sin^2 60^@) - cos^2 45^@`


Evaluate the Following:

`(tan^2 60^@ + 4 cos^2 45^@ + 3 sec^2 30^@ + 5 cos^2 90)/(cosec 30^@ + sec 60^@ - cot^2 30^@)`


Find the value of x in the following :

`2sin 3x = sqrt3`


If sin (A − B) = sin A cos B − cos A sin B and cos (A − B) = cos A cos B + sin A sin B, find the values of sin 15° and cos 15°.


If cos (40° + A) = sin 30°, then value of A is ______.


If cos A + cos² A = 1, then sin² A + sin4 A is equal to ______.


`(sin theta)/(1 + cos theta)` is ______.


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


Given that sinα = `1/2` and cosβ = `1/2`, then the value of (α + β) is ______.


The value of the expression (sin 80° – cos 80°) is negative.


What will be the value of sin 45° + `1/sqrt(2)`?


If θ is an acute angle and sin θ = cos θ, find the value of tan2 θ + cot2 θ – 2.


In a right triangle PQR, right angled at Q. If tan P = `sqrt(3)`, then evaluate 2 sin P cos P.


Share
Notifications

Englishрд╣рд┐рдВрджреАрдорд░рд╛рдареА


      Forgot password?
Use app×