Atriangle has side lengths 6, 7, and b, and the angle between the sides of lengths 6 and 7 measures 60 degress. if a si the area of the triangle and b is the integer closet b, find the value of a/b.

Step-by-step explanation:

We have cosine formula

           c² = a² + b² - 2ab cosC

Here

          c = B

          a = 6

          b = 7

          C = 60°

Substituting

          B² = 6² + 7² - 2 x 6 x 7 cos60

          B² = 43

          B = 6.56

           b = 7 closest integer to B.

Given that A is area of triangle

          A=0.5absinC

          A = 0.5 x 6 x 7 x sin60 = 18.19

We need to find

The value of A/b is 2.60      

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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what graph

step-by-step explanation: