All categories

3 years ago

Without using a calculatorcos² 43° - sin² 74° + cos² 47 - Sin16°

Mathematics

1 answer:

Furkat [3]3 years ago

4 0

Answer:

100

Step-by-step explanation:

because if you add it all up you will find the sum

You might be interested in

Someone pls help with geometryyy

andrezito [222]

What's the problem about geometry? Which section?

5 0

3 years ago

If you have 8/12 of a pizza, how many thirds do you have?

saw5 [17]

You would have 2/3 because 4 can go into the numerator 2 which makes the numerator of your answer 2, then 4 goes into 12 4 Times which makes the denominator of your answer which is 3 so 2/3

5 0

3 years ago

Read 2 more answers

Please help me answer all parts of the question in the photo.

yarga [219]

$i=\sqrt{-1}\\i^2=\sqrt{-1}*\sqrt{-1}=-1\\i^3=\sqrt{-1}*\sqrt{-1}*\sqrt{-1}=-i\\i^4=\sqrt{-1}*\sqrt{-1}*\sqrt{-1}*\sqrt{-1}=1$

3 0

3 years ago

What is 100 in decimals

lesya [120]

Answer:

Step-by-step explanation:

I am assuming you mean what is 100 % in decimals. To convert a percent to a decimal, you divide by 100 (percent means by 100). If you divide 100 by 100, you get 1.

8 0

3 years ago

Read 2 more answers

If f(x) = x2 – 2x, find:<br> f(-3) = [?]

allsm [11]

Answer:

$\boxed{\sf f(-3) = 9}$

Given:

$\sf f(x) = {x}^{2} - 2x$

To Find:

Value of f(x) when x = -3

Step-by-step explanation:

$\sf \implies f(x) = {x}^{2} - 2x \\ \\ \sf \implies f( - 3) = {( - 3)}^{2} - 2 ( - 3) \\ \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 3 - ( - 6) \\ \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =3 + 6 \\ \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =9$

5 0

3 years ago

Without using a calculatorcos² 43° - sin² 74° + cos² 47 - Sin16°​

Without using a calculatorcos² 43° - sin² 74° + cos² 47 - Sin16°