Answer:
sin 90
Step-by-step explanation:
cos (0)
Using the unit circle, we know that cos 0=1
sin 1 and cos 1 are not equal to 1
sin 90 =1
tan 90 = sin 90/ cos 90 = 1/0 =undefined
Answer:
-5
Step-by-step explanation:

Hope this helps
In the value of y problem, the answer is y = 26
Well

translates to

so
log5(x/2)=5 means 5^5=x/2, so 3125=x/2, so 6250=x