Math, asked by maliaakshatha, 1 year ago

find the value cos68cos38 - sin68sin38

kaushikravikant: is the question correct?

maliaakshatha: yes

kaushikravikant: i think ,there will come positive sign

Answers

Answered by gohan

0

Cos(A+B)= cosAcosB - sinAsinB
Cos(68+38)
it will comes in second quadrant so value must be positive becuase cos is positive in second quadrant

Previous Question

Next Question

Similar questions

Math, 8 months ago

raju borrowed rs 1000 from his friend for 2 year at 14%pa.find the interest at the end of 2 years ...

French, 8 months ago

Remplisez le teret avec un certele contracte: 1. Mon père va______bureau 2.Nos parents arrivent____gare 3. J'achète des oeufs_____magasin 5. Voici le plus beau monument____ville 6.Allons_____église 7. la fille_____chanteuse est méchnate...

Computer Science, 8 months ago

what is computer system and its function...

Biology, 1 year ago

Salt is generally added to vegetables during cooking process. After adding salt, vegetables release water. what mechanism is responsible for this ??????

Computer Science, 1 year ago

how can you tell if an email is spam?

Math, 1 year ago

maths questions help please..........

English, 1 year ago

Any Hints for PSA examination...

Math, 1 year ago

A shopkeeper buys 40 TV sets each of 2 brands- Brand A and Brand B. MRP of brand A = 60,000 MRP of brand B = 65,000 He gets discount of 25% on Brand A and 20% on Brand B from distributor. How much did he pay for all the TV sets?