(1) Answer: Identity true

(2) Answer: Identity true

(3) Answer: Identity true

Use the 30-60-90 triangle.
Tan is opposite over adjacent.

Square roots cannot be on the bottom.

The bottom cancel out the square root bar.
Your answer is:

(It's best to memorize the 30-60-90 and the 45-45-90 triangles during trigonometry. It helps a lot.)
Hope this helps!
:)
If your number is smaller than the actual number, you underestimated. If it is larger, you overestimated. Please mark Brainliest!!!
Answer:
80
Step-by-step explanation:
5(1+3)^2
Due to PENDAS, you will first need to do the root
5(4)^2
5(16)
80
Hope it helped!