Question

if sin a=1/√2cosb=1/√2,then find the value of (a+b)​

Answer 1

sinA=

2

1

∵sin30

∘

=

2

1

∴A=30

∘

cosB=

2

1

∵cos45

∘

=

2

1

∴B=45

∘

∴(A+B)=30

∘

+45

∘

=75

∘