Question

cos (a+b) = 1/2 and sun (a-b) =1/2 then the value of a​

Answer 1

Solution :-

• sinA-B= 1/2

→ sin A-B =sin 30°

→. A-B=30°......(I)

• also,. cos A+B=1/2

→cos A+B=cos 60°

→ A+B=60°.......(ii)

by adding (I) and (ii),we get...

• 2A=90°

→A= 45°{answer}

putting the value of A in (ii),we get...

45°+B=60°

→B=60°-45°

→B=15°{answer}

∴ the value of A and B are 45°and 15° respectively$.$

Answer 2

Answer:

pls write the question properly

(cos (a+b) = 1/2 and sun (a-b) =1/2 then the value of a)

what do u mean by sun?