Question

3. Given that sina = 1/2 and casb- 1/2 , what is the value of a+b

Answer 1

Answer:

Step-by-step explanation:

sina=1/2

a= $sin^{-1}(\frac{1}{2} )$

a= 30  

we also know---- sin(30)=1/2

cosb=  -1/2

b=$cos^{-1} (\frac{-1}{2} )$

b=120

we also know--- cos(120)= -1/2

a+b

putting values=

30+120

150