ailiealien
ailiealien
15-05-2016
Mathematics
contestada
can i know the steps to these questions?
Respuesta :
padawan
padawan
15-05-2016
1.
sin ( sin - cos ) + cos(sin + cos)
= sin^2 - sin cos + cos sin + cos^2
= sin^2 + cos^2 = 1
formula: sin^2 + cos^2 = 1
2.
tan a tan(90-a) + sin^2 + cos^2
= tan a tan(90-a) + 1
= tan a / tan a + 1 = 2
formula: sin^2 + cos^2 = 1
tan(90-a) = 1/tan(a)
Answer Link
VER TODAS LAS RESPUESTAS ( 44+ )
Otras preguntas
x^2-2y/y when x=20 and y=x/2
FRENCH 2!Fill in the blank with the correct answer."Ce qui" is used as the _____ of the verb.objectsubjectpast participlesubjunctive
A 4-year old child is speaking on the phone with her grandmother, and instead of verbally responding to her grandmother's questions, she shakes and nods her hea
what is social of the cree tribe?
1. Read the excerpt from The Building of Manhattan. In 1945 a U.S. Air Force bomber making an approach to a Newark, New Jersey, the airport in fog and rain was
Why were people worried about the banks during the great depression?
Lamar is researching a business opportunity and has asked his acquisition team to help him review and verify all of the information about the business. This pro
Simple machines make work easier. Most simple machines reduce the amount of effort force needed to move an object. In this wheel and axle system, the wheel and
FRENCH 2!Fill in the blank with the correct answer."Ce qui" is used as the _____ of the verb.objectsubjectpast participlesubjunctive
HELP PLEASE 32,34,35
