मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान इयत्ता ११

Find the values of sin(480°)

Advertisements
Advertisements

प्रश्न

Find the values of sin(480°)

बेरीज
Advertisements

उत्तर

sin(480°) = sin(360° + 120°)

= sin 120°

= sin(90° + 30°)

= cos 30°

= `sqrt(3)/2`

shaalaa.com
Trigonometric Functions and Their Properties
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Trigonometry - Exercise 3.3 [पृष्ठ १०४]

APPEARS IN

सामाचीर कलवी Mathematics - Volume 1 and 2 [English] Class 11 TN Board
पाठ 3 Trigonometry
Exercise 3.3 | Q 1. (i) | पृष्ठ १०४

संबंधित प्रश्‍न

Find the values of cot(660°)


Show that `sin^2  pi/18 + sin^2  pi/9 + sin^2  (7pi)/18 + sin^2  (4pi)/9` = 2


If sin x = `15/17` and cos y = `12/13, 0 < x < pi/2, 0 < y < pi/2` find the value of sin(x + y)


If sin x = `15/17` and cos y = `12/13, 0 < x < pi/2, 0 < y < pi/2`, find the value of cos(x − y)


If sin A = `3/5` and cos B = `9/41, 0 < "A" < pi/2, 0 < "B" < pi/2`, find the value of cos(A – B)


Find the value of cos 105°.


Prove that cos 8θ cos 2θ = cos25θ – sin23θ


Show that tan(45° + A) =  `(1 + tan"A")/(1 - tan"A")`


Show that tan(45° − A) = `(1 - tan "A")/(1 + tan "A")`


If tan x = `"n"/("n" + 1)` and tan y = `1/(2"n" + 1)`, find tan(x + y)


If θ + Φ = α and tan θ = k tan Φ, then prove that sin(θ – Φ) = `("k" - 1)/("k" + 1)` sin α


Find the value of cos 2A, A lies in the first quadrant, when sin A = `4/5`


Find the value of cos 2A, A lies in the first quadrant, when tan A  `16/63`


Express the following as a product
cos 35° – cos 75°


Prove that `sin  theta/2 sin  (7theta)/2 + sin  (3theta)/2 sin  (11theta)/2` =  sin 2θ sin 5θ


If A + B + C = 180°, prove that cos A + cos B − cos C = `- 1 + 4cos  "A"/2 cos  "B"/2 sin  "C"/2`


If A + B + C = 180°, prove that sin(B + C − A) + sin(C + A − B) + sin(A + B − C) = 4 sin A sin B sin C


If A + B + C = 2s, then prove that sin(s – A) sin(s – B)+ sin s  sin(s – C) = sin A sin B


Choose the correct alternative:
`(1 + cos  pi/8) (1 + cos  (3pi)/8) (1 + cos  (5pi)/8) (1 + cos  (7pi)/8)` =


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×