Answer:
1.9

Step-by-step explanation:
something to the power of 0 is 0, and for the other, you can't really do that number, it's a bit too big
F(3)=2(3) -1
f(3)= 6 - 1
f(3)=5
Answer:
send the question
Step-by-step explanation:
the value of cos 15 is √3+1/2√2
explanation
cos (45-30)
=cos45*cos30+sin45*sin30
=1/√2 * √3/2 + 1/√2 * 1/2
=√6/4 + √2/4
=√6 + √2/4
=√3+1/2√2