Math, asked by sohambakane394svb, 1 year ago

prove that cos2A = cos^2A - sin^2A

Answers

Answered by raju35652

1

Step-by-step explanation:

formula:

cos(A+B)=cosAcosB-sinAsinB

if A=B

cos(A+A)= cosAcosA-sinA-sinA

cos2A= cos²A-sin²A

Previous Question

Next Question

Similar questions

Hindi, 6 months ago

make a sentence with मेदिनीं in sanskrit...

Science, 6 months ago

and whales buath thout ch fill in the blants 12 small changes that take place Bac Produchy one normally In seda dhat help them to give Louny Short periode problems due to changes in the long slems of Ida calid In the mountain wens Shapet. coup Kind Shaw kinds of plant ha 2 that hay 1w light brown Ski in lps to bora frogs have feet them to swian in wher C6 Dolphins The Process by the of waste 3...

History, 6 months ago

how life of a person was divided in private and public spheres?

Math, 1 year ago

The parallel sides of a Trapezium have a average of length 10 cm and which are separated by 6 CM the area of the trapezium is what? pls answer it's urgent I'll mark BRAINLIEST!!!!

Environmental Sciences, 1 year ago

What is meant by southern oscillation how it affects indian climate?

English, 1 year ago

what chores did kalam do as a little boy?

Economy, 1 year ago

âMoney cannot buy all goods and services that one needs to live well.âexplian.

Social Sciences, 1 year ago

why was federalism found succesful in india...