Answer:
16.19
Step-by-step explanation:
Use the cosine rule:

Answer:
7^10
When multiplying exponents keep the number the same and add the power
FOr example in 9^3 x 9^7 we keep 9 the same whilst adding the exponents
9^10 would be the answer for the example problem
Step-by-step explanation:
Answer:
4x+7
Step-by-step explanation:
x
2x+4
x+3
I hope this helps :)
Answer:
The 3rd one Abc is a congeuent
A right triangle has 1 90 degree angle and the interior angles must add to 180.
3(x+8)+x+90=180
3x+24+x+90=180
4x+114=180
4x=66
x= 16.5
Plug this value in to find the last angle
16.5+90+x=180
106.5+x=180
x=73.5
Final answer: 73.5 degrees and 16.5 degrees