Answer:
28
Step-by-step explanation:
substitute 4 in for p in the equation
64-9p=
64-9(4)=
64-36=
28
Answer:
complementary angles
one angle measures 22�more than the other
Let x represent the smaller one
x + (x+22) = 90
2x = 68
x = 34, the smaller, 56 the larger
34 + 56 = 90 CHECKS!
Step-by-step explanation:
sin θ = 3 / 7 = .429
sin^2 θ + cos^2 θ = 1 trig identity
9/49 + cos^2 θ = 1
cos^2 θ = 40 / 49 = .816 cos θ = .903
Check .429^2 + .903^2 = 1
cos .903 = 25.4 deg
In the second quadrant sin = +, cos = -, tan = -
So 25.4 deg in the second quadrant = 180 - 25.4 = 154.6 deg
Check:
sin 154.6 = .428
cos 154.6 = -.903
tan 154.6 = -.475
The length of any right angled triangle's hypotenuse is the square root of the squares of the other two sides.
a^2+b^2=c^2
