Answer:
1.5 - 1 1/5 = 3
10
= 0.3
Step-by-step explanation:
Answer:
none of the above
Step-by-step explanation:
√36100 = ±190
Answer:
x =20
Step-by-step explanation:
Factorize 81
81 = 9 * 9 = 3 * 3 * 3 * 3
Therefore x = 20
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identities
tan x = , sin² x + cos²x = 1, sec x =
Consider the left side
- tant -
= - -
= -
=
=
= ← cancel (sint - 1) on numerator/ denominator
=
= sect = right side ⇒ verified