samoka
samoka
02-04-2017
Mathematics
contestada
Does anyone can help me to prove that ...
Respuesta :
ghanami
ghanami
02-04-2017
hello :
by identity : cos²(x)+sin²(x) = 1
divide by cos²(x) :
cos²(x) /cos²(x) +sin²(x)cos²(x)/ = 1/cos²(x)
1+sin²(x)cos²(x)/ = 1/cos²(x)
1+ (sin(x)/cos(x))² = 1/cos²(x)
1+tan²(x) = 1/cos²(x)
conclusion :
tan²(x) = 1/cos²(x) -1
Answer Link
VER TODAS LAS RESPUESTAS ( 37+ )
Otras preguntas
Provide two written definitions of an oxidation-reduction reaction
There are 812,000 gallons of water in an Olympic training center’s pool. Express this number in scientific notation
An investment of $450 increases at a rate of 6.5% per year. What is the growth factor, b?
What is the margin of safety? a. $ 25,000 b. $ 50,000 c. $100,000 d. $250,000?
the national hurricane center issues a hurricane warning if sustained winds of 74 miles per hour or higher associated with a hurricane are expected in the costa
According to dalrymple in the "how—and how not—to love mankind" essay, there is a temptation, particularly among members of the intelligentsia, to suppose that
I need help with this because I am confused on how to do this please and thank you
In a certain class, 15% of the class failed a math test completely, 25% students made one mistake each, and 24 students got a perfect score. How many students a
Monique ran one mile in 6 minutes. Her average speed was how many miles per hour?
name someone from the Pamunkey Indian Tribe
