1. Given any triangle ABC with sides BC=a, AC=b and AB=c, the following are true :
i) the larger the angle, the larger the side in front of it, and the other way around as well. (Sine Law) Let a=20 in, then the largest angle is angle A.
ii) Given the measures of the sides of a triangle. Then the cosines of any of the angles can be found by the following formula:
a^{2}=b ^{2}+c ^{2}-2bc(cosA)
2.
20^{2}=9 ^{2}+13 ^{2}-2*9*13(cosA) 400=81+169-234(cosA) 150=-234(cosA) cosA=150/-234= -0.641
3. m(A) = Arccos(-0.641)≈130°,
4. Remark: We calculate Arccos with a scientific calculator or computer software unless it is one of the well known values, ex Arccos(0.5)=60°, Arccos(-0.5)=120° etc
Answer:
Step-by-step explanation
Take the square root of both sides.
Add both sides by 5
Nouns: Flock, Birds, edge, town
Prepositional phrases: Landed, on
Subject pronoun: We
Possesive Pronoun: Their
Adverb: Daily.
hope this helped!
Answer:
its 2 1/2 its width
Step-by-step explanation:
Answer:
x + 7
Step-by-step explanation:
If the amount of cats Taylor has is x and Staci has 7 more cats you are basically adding 7
so since The amount of Taylor's cats are x and you are adding 7 it would be written as
x+7
