Question

angle b is equal to 90 degree find Sin A cos c bc=5 ab=12 ac=13

pls find it icse concise mathematics from​

Answer 1

Step-by-step explanation:

By Pythagoras theorem, we have

AC

2

=AB

2

+BC

2

TRIGONOMETRICRATIOS

⇒AC

2

=12

2

+5

2

⇒AC

2

=169

⇒AC=13

When we consider t-ratios of ∠C, we have

Base = BC = 5, Perpendicular = AB = 12 and, Hypotenuse = AC = 13

∴cosC=

Hypotenuse

Base

=

13

5

andcotC=

Perpendicular

Base

=

Perpendicular

Base

=

12

5