Question

Necesito ayuda porfavor ​

Answer 1

o:nosebnqsbqbcq

nolose perdon

Answer 2

Respuesta:

Explicación paso a paso:

a)

sent = 4/5

c.o = 4

h = 5

c.a = ?

h² = c.o² + c.a²

5² = 4² + c.a²

25 = 16 + c.a²

25 - 16 = c.a²

9 = c.a²

√9 = c.a

3 = c.a

como esta en el cuadrante II es - 3

cost = -3/5

sen2t = 2sentcost

sen2t = 2.(4/5).(-3/5)

sen2t = -24/25

cos2t = cos²t - sen²t

cos2t = (-3/5)² - (4/5)²

cos2t = 9/25 - 16/25

cos2t = -7/25

tan2t = 2tant/(1 - tan²t)

tan2t = 2(4/-3)/(1 - (4/-3)²)

tan2t = (-8/3)/(1 - 16/9)

tan2t = (-8/3)/(-7/9)

tan2t = -72/-21

tan2t = 24/7

b)

tan t = 8

c.o = 8

c.a = 1

h = ?

h² = 8² + 1²

h² = 64 + 1

h² = 65

h = √65

sen2t = 2.(8/√65).(1/√65)

sen2t = 16/65

cos2t = (1/√65)² - (8/√65)²

cos2t = 1/65 - 64/65

cos2t = -63/65

tan2t = 2(8)/(1-8²)

tan2t = 16/(1 - 64)

tan2t = - 16/63