Answer:
a ,b d a c b d a d d b c a d b b Step-by-step explanation:
Sinx=1/2
sin30=1/2
therefore x=30 degree
Step-by-step explanation:
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Answer:

Step-by-step explanation:
Remove the parentheses and take out the constansts.

Simplify 7 x 3 to 21.

Use the product rule: 

Simplify 2+5 to 7.

Simplfiy 3 + 8 to 11.
