Answer:
use the theorem of pythagoras
LM=MN²+LN²
9²=X²+6²
81=X²+36
-x²=36-81
ײ=36+81
ײ=117
x=10
25 is the answer hope it helps
B C D are exponential functions
Answer:
Cos b
Step-by-step explanation:
1/2[sin(a+b)+sin(a-b)]
1/2[sin a cos b +cos a sin b + sin A cos B - cos A sin B]
1/2[2sin a cos b]
sin a cos b
