Math, asked by anisacadeeygmailcom, 10 months ago

find the value of cos120 (use sum and difference )

Answers

Answered by ashutosh863

2

Answer:

cos 120 means cos π/3 which is equal to -1/2

Answered by excellentboy39

1

Answer:

cos 120 = cos 180- cos 60

=- cos 60

cos 120 = -1/2

HOPE IT HELPS

MARK AS BRAINILIST

Previous Question

Next Question

Similar questions

English, 5 months ago

write a dialogue between you and any animal in 8 to 10 lines ?

Chemistry, 5 months ago

Consider the following elements 6C,11Na,12Mg,15P,17Cl,28Ni can form hydrides by electrovalent bonding...

Math, 5 months ago

Television me dance reality show 40% log dkhte hai jabki sangeet pe adharit reality show 65% log dkhte hai 25% log dono show dekhte hai jo log koi show ni dekhte unka pratishat gyat kare?

Math, 10 months ago

lenggth and breadth of arectanglar field are 20m and 15m respectively.find the ratio of the length to the breadth of the field.

Math, 10 months ago

3 Hr. 10 Paper - 1 MATHS(12) SECTION - A Answer the following in instruction: (1 Mark each) Q. State whether the following statements are true or false; 1) A quadratic polynomial, the sum of whose zeroes is the sum of whose zeroes is O and one zero is 315 2) =3 is one of the solution of 6x +90 3) If the sum of n terms of an AP is s 3 5n then 4) 339 - sec 33 = -1 (16 Marks) Q. Choose the correct...

Math, 1 year ago

the height of a room is 3 metre 50 cm.A bulb is hang from the ceiling by a wire of length 1 metre. if the length of the bulb is 10 centimetre what is the height of the bottom of the bulb from the floor?

Math, 1 year ago

Find the amount and compound interest on a sum of 16435 at 5% p.a for 3 years compound annually...

English, 1 year ago

Which sentence is correct: on a sports team OR in a sports team?