jacalneaila
the sides of the parallelogram are 36 cm and 76 cm,. if they intersect at angle of 63 degrees , find the area of the parallelogram.



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jacalneaila
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@ranga

jacalneaila
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how can i solve this?

ranga
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dw:1385781798570:dw

ranga
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Area of a parallelogram = base * height = AB * DE = 76 * DE
Find DE from the triangle DAE.

jacalneaila
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how?

jacalneaila
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@ranga

ranga
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In triangle DAE sin(63) = ?

ranga
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What is the definition of sine in a triangle?

jacalneaila
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i dunno

ranga
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sine = opposite / hypotenuse
So for sin(63) in the triangle AED what is opposite and what is hypotenuse?

jacalneaila
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@ranga step by step please

ranga
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I can't make it any simpler. You should know the definition of sine by now. If I keep solving problems then there won't be any learning.

jacalneaila
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the hypotenuse is 36 and the opposite is 76

jacalneaila
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correct?

jacalneaila
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@ranga