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Данякеп
@Данякеп
August 2021
2
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anna2501v
Task/26548492
--------------------
9.
-18√2sin(-135°)
= -18√2*(-sin135°) =18√2sin(180°-45°) =18√2sin45°=
18√2 *1/√2
=18 .
------------
10.
24√2cos(-
π/3)sin(π/4)
=24√2cos(π/3)sin(π/4) =24√2*(1/2)*1/√2
=12.
------------
11.
14sin19
°
/ sin341°
=14sin19°
/
sin(360° - 19°) =14sin19°
/
(-sin19°)
= -14.
2 votes
Thanks 1
oganesbagoyan
Verified answer
Ответы:
9. 18
10. -12
11. -14
1 votes
Thanks 1
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Answers & Comments
--------------------
9.
-18√2sin(-135°) = -18√2*(-sin135°) =18√2sin(180°-45°) =18√2sin45°=
18√2 *1/√2 =18 .
------------
10.
24√2cos(-π/3)sin(π/4)=24√2cos(π/3)sin(π/4) =24√2*(1/2)*1/√2 =12.
------------
11.
14sin19° / sin341° =14sin19° / sin(360° - 19°) =14sin19° /(-sin19°) = -14.
Verified answer
Ответы:9. 18
10. -12
11. -14