How many two digit positive integers can be formed from the digits 1, 3, 5, and 9, if no digit is repeated?
2 answers:
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The area of rectangle with length l and width w is
If the length of rectangle is expressed as and the width of rectangle is expressed as
, then the area of rectangle is
Answer : 29.5°
Given r = 10, q = 20, and Q = 100°
From the attached figure we can see that two sides and one angle is given
We use sine rule to find angle R
In triangle QRS
r = 10, q = 20, and Q = 100°
Replace all the values
=sin R
0.4932403876 = sin (R)
R=
R= 29.5 degrees
