Question

If sin?(Łº) + cos²(42) = 1, then what does L equal?

Answer 1

Step-by-step explanation:

do u know the answer to this?

Alexis and Kym arrange to meet at the running track to train for an athletics carnival. They cycle to the track, leaving their homes at the same time. It takes Alexis 8 minutes to travel 2800 m from her home to the track. Kym takes 18 minutes,

after travelling a distance of 6.12 km.

Alexis thought she was faster, but Kym was not convinced. Who do you think was faster? Give reasons for your answer.

Answer 2

Answer:

Ł=42°

Step-by-step explanation:

We have the equation:

$\sin^2(\L) +\cos^2(42)=1$

Remember from the Pythagorean Identity that:

$\sin^2(\theta)+\cos^2(\theta)=1$

So, the angles within our trig functions must be exactly the same.

Therefore, since the angle within cosine is 42°, this means that our angle within sine, Ł, must also be 42°.

And we're done!