Use prime factorization to reduce 36/180
1 answer:
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The length of PR is 4.4 units.
Explanation:
It is given that the length of the hypotenuse is 10 units.
Also, the angle of R is 64°
To find the length of PR, we shall use the cosine formula,
Here, , adj = PR and hyp = 10
Substituting these values in the formula, we get,
Multiplying both sides by 10, we get,
Substituting the value for cos 64, we get,
Multiplying, we have,
Rounding off, we get,
Thus, the length of PR is 4.4 units.
Answer:
1st option
Step-by-step explanation:
the area of the shaded portion is calculated as
area of sector - area of white Δ
area of sector = area of circle × fraction of circle
= πr² × ( r is the radius )
= π × 8² ×
= 64π ×
= 16π in²
area of Δ = bh ( b is the base and h the perpendicular height )
here b = h = 8
area of Δ = × 8 × 8 =
× 64 = 32 in²
then
area of shaded portion = (16π - 32 ) in²