Home
Class 12
MATHS
cos 40^(@) + cos 80^(@) + cos 160^(@) =...

`cos 40^(@) + cos 80^(@) + cos 160^(@) = `

A

`0`

B

1

C

2

D

3

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1 E ( TRIGONOMETRIC IDENTITIES )|49 Videos

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1 F ( PERIODIC FUNCTIONS )|39 Videos

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1 C ( MULTIPLE AND SUBMULTIPLE ANGLES )|118 Videos

  • TRIGONOMETRIC EQUATIONS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) SET - 4|4 Videos

Similar Questions

Explore conceptually related problems

cos 20^(@) + cos 100^(@) + cos 140^(@) =

cos 20^(@)* cos 40^(@) * cos 60^(@) * cos 80^(@) =

cos 20^(@) + cos 40^(@) + cos 60^(@) +...+cos160^(@)+cos 180^(@)=

sin 40^(@) - sin 80^(@)+ sin 160^(@) =

1 + cos 10^(@) + cos 20^(@) + cos30^(@) =

cos 10^(@) cos 30^(@) cos 50^(@) cos 70^(@) =

Cos 40^(@) + Cos80^(@) + Cos160^(@) + Cos240^(@) =