Question

Suppose that △ABC is a right triangle with ∠C=90∘. If AC=4 and BC=6, find the following quantities.
cosA sinA tanA secB cscB cotB

Answer 1

draw a diagram



when you know AB you can find your trig ratios

Answer 2

4sqrt3

Answer 3

cosA=4/4sqrt3?

Answer 4

so the hypotenuse AB seems to be incorrect

\[AB^2 = 36 + 16...so...AB^2 = 52..... or.... AB = 2\sqrt{13}\]

which affects all your answers.

Answer 5

so cosA=4/2sqrt13?

Answer 6

thats correct

Answer 7

ok thanks

Answer 8

how would i get the sec csc and cot

Answer 9

for remember sec = 1/cos csc = 1/sin cot = 1/tan

so find the ratios sin, cos tan then take the reciprocals.

Answer 10

k thanks

Answer 11

but its secB and not secA

Answer 12

sin find cosB then take the reciprocal of that answer...

Answer 13

thanks