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Which is complementary to a 72 degree Angle 108 72 18 or 10 degrees?
90 degrees - 72 degrees = 18 degrees -------------------
What angle measures 72 degrees?
72 degrees is an acute angle
Sin equals 0.9?
If sin(theta) is 0.9, then theta is about 64 degrees or about 116 degrees.
What is the sin of 90 degrees?
sin(90) = 1
What is the answer to sin of 390 degrees?
sin(360+30) =sin(30)= 1/2
What is the period of the function sin-5x?
It 2*pi/5 radians or 72 degrees.
How do you solve sin x plus cos x equals zero?
The statement of the problem is equivalent to sin x = - cos x. This is true for x = 135 degrees and x = -45 degrees, and also for (135 + 180n) degrees, where n is any integer.
How tan9-tan27-tan63 tan81 equals 4?
tan(9) + tan(81) = sin(9)/cos(9) + sin(81)/cos(81)= {sin(9)*cos(81) + sin(81)*cos(9)} / {cos(9)*cos(81)} = 1/2*{sin(-72) + sin(90)} + 1/2*{sin(72) + sin(90)} / 1/2*{cos(-72) + cos(90)} = 1/2*{sin(-72) + 1 + sin(72) + 1} / 1/2*{cos(-72) + 0} = 2/cos(72) since sin(-72) = -sin(72), and cos(-72) = cos(72) . . . . . (A) Also tan(27) + tan(63) = sin(27)/cos(27) + sin(63)/cos(63) = {sin(27)*cos(63) + sin(63)*cos(27)} / {cos(27)*cos(63)} = 1/2*{sin(-36) + sin(90)} + 1/2*{sin(72) + sin(36)} / 1/2*{cos(-36) + cos(90)} = 1/2*{sin(-36) + 1 + sin(36) + 1} / 1/2*{cos(-36) + 0} = 2/cos(36) since sin(-36) = -sin(36), and cos(-36) = cos(36) . . . . . (B) Therefore, by (A) and (B), tan(9) - tan(27) - tan(63) + tan(81) = tan(9) + tan(81) - tan(27) - tan(63) = 2/cos(72) – 2/cos(36) = 2*{cos(36) – cos(72)} / {cos(72)*cos(36)} = 2*2*sin(54)*sin(18)/{cos(72)*cos(36)} . . . . . . . (C) But cos(72) = sin(90-72) = sin(18) so that sin(18)/cos(72) = 1 and cos(36) = sin(90-36) = sin(54) so that sin(54)/cos(36) = 1 and therefore from C, tan(9) – tan(27) – tan(63) + tan(81) = 2*2*1*1 = 4
Which temperature is 20 degree warmer than 52 degree f?
72 degrees F.72 degrees F.72 degrees F.72 degrees F.
What is the measure of an angle who's complement is 18 degrees?
90 - 18 = 72 degrees.90 - 18 = 72 degrees.90 - 18 = 72 degrees.90 - 18 = 72 degrees.
Which is complementary to a 72 degree Angle 108 72 18 or 10 degrees?
90 degrees - 72 degrees = 18 degrees -------------------
What are the angle of a pentagon?
72 degrees each. There are 5 angles. You divide 360 degrees by 5 and get 72 degrees.
Solve sin x square root of 3 by 2?
Do you mean sin(x)=sqrt(3)/2? IF so, look at at 30/60/90 triangle. We see the sin 60 degrees is square (root of 3)/2
What does 72 degrees Fahrenheit equal in celsius?
72 degrees Fahrenheit is equal to 22.22 degrees Celsius.
What is 72 Fahrenheit in cel?
72 degrees Fahrenheit is approximately 22.2 degrees Celsius.
What is sin 97 degrees?
all sin is sin97 degrees Fahrenheit = 36.1 degrees Celsius
What is sin 57 degrees?
The sine of 57 degrees is approximately 0.8387.
