Please answer this math question asap!! 30 points and brainliest!!
BRAINLIEST ONLY IF YOU SHOW YOUR WORK!
MUST SHOW WORK!
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Answered by
57
Answer:
as we know that sinx= perpendicular / hypotenuse
sin29= 7.7/ DE
0.4848=7.7/ DE
DE=7.7/0.4848
DE= 15.88 cm
Answered by
59
From image we can see That :-
→ DF = Length of Perpendicular = 7.7cm .
→ Angle DEF = 29°
→ DE = Length of Hypotenuse = ?
Solution :-
we know That, sin@ = (Perpendicular/Hypotenuse) .
So,
→ sin29° = DF/DE
→ sin29° = 7.7/DE
→ DE = 7.7 / sin29°
→ DE = (7.7 / 0.484)
→ DE = 15.90cm. = 16cm (To the Nearest Tenth of a metre).
Hence, Length of DE is 16cm.
useful :-
→ sin theta = Perpendicular/Hypotenuse
→ cos theta = Base/Hypotenuse
→ tan theta = Perpendicular/Base
→ cosec theta = Hypotenuse/Perpendicular
→ sec theta = Hypotenuse/Base
→ cot theta = Base/Perpendicular..
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