Question

6. sin 20° 28'cos 9° 32' + cos 20° 28' sin 9° 32' =​

Answer 1

Answer:

Here is your answer...

SinAcosB+cosAsinB=sin(A+B)

adding  A and B, we get

A=20° 28'

B=9°   32'

------------------

    29° 60'

as we know there is 1 degree in 60 mins.

so,

         29° + 1°= 30°

and the value of sin 30°=1/2.

Hence the ans is 1/2.

Step-by-step explanation:

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