Math, asked by sanjanarajN, 1 year ago

cos(x+y)=? cosx+cosy=?

Answers

Answered by ammaraliarain24

2

Answer:

cos(x+y)= cosxcosy-sinxsiny

Answered by rishu6845

2

Answer:

cos(x+y)=cosx cosy -sinx siny

cosx+cosy=2cos(x+y/2) cos(x-y/2)

Previous Question

Next Question

Similar questions

Music, 6 months ago

Explain water cycle..........

Political Science, 6 months ago

women's.................. dependence on men affects their power within the family a) social b)economic c)cultural d)political...

Science, 6 months ago

Name the elements present in the following compounds. 1. common salt 2. Ammonia 3. glucose answer in English and fast ...

Physics, 1 year ago

Once artwork is inserted into a placeholder, it can be moved around on a slide. True or False...

Math, 1 year ago

Q.10 In an equilateral triangle ABC, with length of each side = 3 cm, D is the point on BC such that BD = CD. What is the length of AD? (a) V5 cm (€) 7 cm (b) V6 cm (d) 8 cm...

Biology, 1 year ago

Name the process in which glucose undergoes glycolysis and cons pyruvic acid which undergoes anaerobic respiration...

Chemistry, 1 year ago

Why is the 5d orbital instead of the 4f orbital filled in lanthanum?

Math, 1 year ago

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. What are the marks obtained by the two students?