The correct answer is -6m-n+3. You have to simplify the expression.
Answer:
111/40
Step-by-step explanation:
3 2/5=17/5
17/5-5/8=111/40
Answer:
see explanation
Step-by-step explanation:
Given
tan a =
= 
We require the hypotenuse h
Using Pythagoras' identity
h² = 9² + 40² = 81 + 1600 = 1681 ( take square root of both sides )
h =
= 41 , thus
sin a =
= 
cos a =
= 