Given: sin theta = 2/5. This tells us that the lengths of the opp side and the hyp are 2 and 5 respectively. The adj side is found using the Pyth. Thm.: 5^2-2^2= 25-4 = 21, so that the adj side is sqrt(21).
The double angle formula for the sine is sin 2theta = 2 sin theta *cos theta.
In this particular problem, the sine of 2theta is 2*(2/5)*[sqrt(21) / 5], or:
(4/25)*sqrt(21).
Answer:
Del has 19 comic book
Step-by-step explanation:
to figure this out we need to take 57 and divide by the 3 given.
57 ÷ 3 = 19
so because we divided 57 by 3 we know the answer is 19
Del has 19 comic books
Step-by-step explanation:
hsbsbs snz s nsnsnsssksnnsjs
Answer:
d= -5/3
Step-by-step explanation:
d + 4/3 = -1/3
d= -4/3 -1/3
d= -5/3
