KeiajMarljayne
KeiajMarljayne
24-11-2016
Mathematics
contestada
Evaluate and simplify tan 15º.
Respuesta :
syed514
syed514
27-11-2016
tan(15) = tan(45 - 30)
= [tan(45) - tan(30) ] / [ 1 + tan(30)tan(45)]
= (1 - 1/sqrt(3)) /(1 + 1/sqrt(3))
= (sqrt(3) - 1)/(sqrt(3) + 1)
= (sqrt(3) - 1)^2 /(3 - 1)
= 1/2 [3 + 1 - 2sqrt(3) ]
= (2 - sqrt(3) )
= 0.27 is your answer
Answer Link
VER TODAS LAS RESPUESTAS ( 64+ )
Otras preguntas
In what ways does the "viscosity" of H₂O — as a property of H₂O — beneficial to life on Earth? {No answer choices given. WILL CONSIDER Awarding "Brainliest"
3 times the quantity of m minus 7
Internet is a completely open platform and it does not have to abide by any laws. true. false.
Who served in the british army until 1771, when he resigned after marrying a colonial girl?
What is the electron configuration for sulfur? A. 1s2 2s2 2p6 3s2 3p4 B. 1s2 1p6 2s2 2p6 3s2 C. 1s2 2s2 2p6 3s2 3p3 4s1 D. 1s2 2s2 2p6 3p1 3d5
In a 0.100 m hf solution, the percent dissociation is determined to be 9.5%. calculate the ka for hf based on this data.
Ms. Andrews bank account balance was $-25.30 at the end of April. In may debt increased by $13.55. She wants her bank account to be positive $30 by the end of
How was the code of hammurabi different from modern day western legal codes?
A sky diver steps from a high-flying helicopter. If there were no air resis- tance, how fast would she be falling at the end of a 12-second jump?
A motorcyclist rides for 1.5 hours at a speed of 80 km/h. Then she encounters traffic and rides 20 km at an average speed of 25 km/h. What total distance did sh
