Answer:
cos(400)
Step-by-step explanation:
Useful things:
Cofunction identity: sin(x)=cos(90-x)
Sine and cosine have period of 360 degrees.
So sin(50)=cos(40) by cofunction identity.
Since cosine has period of 360 degrees then cos(40)=cos(360+40).
That simplifies to cos(400).
B. two
explanation:
i took the test
hope this helps. have a great day!!
Answer:Side x side x side
Since it is usually equally sided, it would be SxSxS
false that not true they have all unequal sides
3x-5=8x-60
55=5x
x=11
4/3
solution is attached
