Math, asked by prajanyasaikia123, 10 months ago

A,B are two acute angle and A+B<90°. prove that cos(A+B)cos(A-B)= cos2A-sin2A

Answers

Answered by Andrewdavid

0

i would help but science exam tomorrow so goodbye

ATLEAST WISH ME LUCK SMI

Previous Question

Next Question

Similar questions

Math, 5 months ago

6. The length of a rectangle is twice the breadth. If its perimeter is 60 metres, then find its length...

Political Science, 5 months ago

What is PIL? Discuss.

Physics, 5 months ago

element belonging to the same group have the same velocity give reason...

Biology, 10 months ago

a _______ is a substance that is given to a person to protect against a particular disease ...

Geography, 10 months ago

NCERT कक्षा 12 भूगोल- भारत : लोग एवं अर्थव्यवस्था पाठ 8 निर्माण उद्योग के सभी प्रश्न उत्तर...

Biology, 1 year ago

guava has 200viable seeds. Write total number of 1)pollen grains 2)gametes pls explain??

English, 1 year ago

write a letter to an editor to write a letter to the editor of a newspaper the price rise of essential commodities...

History, 1 year ago

In british raj , the setting up of trade and industries brough about an economic unification . Explain the Above line deeply plz to mark your self brainliest...