Question

If sinQ =5/13 find cosQ and tanQ​

Answer 1

Answer:

Explanation:

If sin=5/13

then the ratio of opposite sidehypotenuse

=5\13

By Pythagorean Theorem

If

opposite side

=

5

units

and

hypotenuse

=

13

units

(for any

units

)

then

adjacent side

=

12

units

and

cos

=

adjacent side

hypotenuse

=

12

13

However, we need to note that if the angle is in Quadrant II then the

adjacent side

will actually be a negative value,

so

cos

=

12

13

for an angle in Q

cos

=

−

12

13

for an angle in Q II

(the angle can't be in Q III or Q IV, since

sin

>

0

)