Question

if tan A= 3/4, find cosA and cosec
A​

Answer 1

Answer:

Sec A=(25/16)^0.5= +/-5/4. Cot A=1/tan A=1/(3/4)=4/3. cosec^2 A= 1+cot^2 A=1+(4/3)^2=1+16/9=25/9

Answer 2

tan A =3/4 =perpendicular / base

perpendicular is 3 units .

base is 4 units.

we know formula of hypotenuse.

H² = P²+ B²

H² = 3² +4²

H = 5 units

cos A = base /hypotenuse

cosA = 4/5

cosec A = hypotenuse/perpendicular

cosec A = 5/3....

may this helps