Use the half angle identity, tan157.5=(1-cos315)/sin315
cos315=cos(-45)=√2/2, sin315=-√2/2
tan157.5=(1-√2/2)/(-√2/2)=(2-√2)/(-√2)=(2√2-2)/(-2)=1-√2
Answer:
49 units
Step-by-step explanation:
Given the triangles are similar then the ratios of corresponding sides are equal, that is
= , substitute values
= ( cross- multiply )
22BC = 484 ( divide both sides by 22 )
BC = 22
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Similarly
= , substitute values
= ( cross- multiply )
22AC = 352 ( divide both sides by 22 )
AC = 16
Thus perimeter of Δ ABC is
perimeter = AB + BC + AC = 11 + 22 + 16 = 49 units
Answer:
-11u-65v
Step-by-step explanation:
1) Pemdas
-7(2u-6v)-7v-3(10v+u)
-14u-42v-7v-30v+3u
2)Combine Like Terms
-14u-3u -42v-7v-30v
3) Solve
-11u-65v
1 1/3 is greater than 1 so that means he rode more miles this week.
Answer: c) he rode more miles this week