Question

Given 15cotA=8, find sinA and secA .

Answer 1

Answer:

sinA = 15/17

secA = 17/8

Step-by-step explanation:

15cotA = 8

cotA = 8/15

tanA = 15/8

Now we know

$sec^{2}A - tan^{2}A = 1$

$sec^{2}A$ = 1 + (15/8)^2 = 289/64

$secA$ = 17/8

cosA = 8/17

sinA = $\sqrt{1 - 64/289}$ = 15/17