Sece (d) 1-sina
(d)
Prove the following:
tano
(a)
= 1
cose coto
cosece cote
(b)
=
sino tane
sec0 - 1
(c)
sinée
sec?0
1
1
+
= 2sec a
1
1 + sina
1 + sine cose
(e)
+
2seco
1 + sino
cose
1
1
f) 1 + cose
+
1 - coso
= 2 cosec²0
1
g) sece – tane
= seco + tano
1
= coseco + coto
coseco - cote
sind + cose
seco + coseco
sino. cose
tano + tana
)
cote + cota
tana . tano
h)
i)
Ivedanta

Secant be and cf intersect at point d inside a what is the measure of cde

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

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