Question

Find a and b if sin(a+2b) = √3/2 and cos( a+ 4b) = 0 where a nad b are acute angles

Answer 1

Answer:

a=30 , b=15

Step-by-step explanation:

we know that sin60°= √3/2

so a+2b=60... ., .. . (1)

cos 90°=0

so a+4b=90... .. .. .. (2)

from (1) & (2)

2b=30

b=15

a=30