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Find out value of sin 45 cos 45 - sin 230?
Assuming that the angles are all stated in degrees: sin(45) = cos(45) = 1/2 sqrt(2) sin(45) cos(45) = (1/2)2 x (2) = 1/2 sin(230) = - 0.7660444 sin(45) cos(45) - sin(230) = 0.5 + 0.7660444 = 1.2660444 (rounded)
Sin x plus cos x?
sin(x) + cos(x) = sqrt(2) · sin(45°+x)
What is sin pi over 4?
What does sin(pi/4) = ?Let's consider a special right triangle: the 45-45-90 triangle.In any 45-45-90 triangle, since the two 45 degree angles are congruent, the sides opposite to those angles are both congruent.Now, considering the unit circle, the radius of the circle must be one.So, if you put in a 45-45-90 triangle in a unit circle, this allows you to find the value of sin pi/4 because pi/4 radians = 45 degrees.Because the circle has radius 1, the hypotenuse of the triangle must also be one. Since the other two sides must be equal, you can solve for them using the Pythagorean theorem.a2 + b2 = c2a2 + a2 = 122a2 = 1a2 = 1/2a = √(1/2)a = 1/√(2) * (√(2)/√(2))a = √(2) / 2Since sin is defined as opp/hyp, sin 45 degrees (pi/4 radians) = (√(2)/2)/1 = √(2)/2I hope this helped explain my answer. If there's anything that's still confusing, just tell me. (Sorry I didn't do it the first time).
What is the value of sin 20?
0.34202014332566873304409961468226
What is the value tan45?
Tan(45) = Sin(45) / Cos(45) Sin(45) = sqrt(2) / 2 Cos(45) = sqrt)2)/2 Hence Tan(45) = [sqrt(2) / 2] / [sqrt(2)/2] Division of fractions. [sqrt(2) / 2] / [sqrt(2)/2] => sqrt(2) /2 X 2/ sqrt(2) Cancel down by 'sqrt(2) ; 1/2 X 2/1 Cancel down by '2' 1/1 X 1/1 = 1/1 = 1 Hence Tan(45) = 1 .
Find the value of a if tan 3a is equal to sin cos 45 plus sin 30?
If tan 3a is equal to sin cos 45 plus sin 30, then the value of a = 0.4.
Find out value of sin 45 cos 45 - sin 230?
Assuming that the angles are all stated in degrees: sin(45) = cos(45) = 1/2 sqrt(2) sin(45) cos(45) = (1/2)2 x (2) = 1/2 sin(230) = - 0.7660444 sin(45) cos(45) - sin(230) = 0.5 + 0.7660444 = 1.2660444 (rounded)
Find the value of 3 sin 40 4 cos 20 - tan 45?
6.25
How will the value of sin 35 determine?
to find sin 35 here we take the angle = x=15 then 3x=45 , 4x=60 then 4x-3x=60-45 then by putting sin on rhs we will get cos 35 and sin 35 hope it helped you
What is the value of sin 45?
= 1/sqrt(2) = 0.7071
Identities to find the exact value of sin 75?
what is the value of sin 75 degree
Find the value of sin 105?
0.96593 (rounded)
What if the sine of an angle is 0.707 what is value of that angle in degrees?
sin-1(0.707) = 44.99134834 or about 45 degrees
What is exact value of sin75?
sin(75) = sin(45 + 30) = sin(45)*cos(30) + cos(45)*sin(30) = [1/sqrt(2)]*[sqrt(3)/2] + [1/sqrt(2)]*[1/2] = 1/[2*sqrt(2)]*[sqrt(3) + 1] that is [sqrt(3) + 1] / [2*sqrt(2)]
Find the value of sin 300 degrees?
sin 300 = -sin 60 = -sqrt(3)/2 you can get this because using the unit circle.
Cos 45 degrees equals sin?
cos(45) = sin(45) You can see this as follows: imagine a circle with radius 1. The point on the circle with angle 45 degrees, lies on the line y=x, equally far from the x-axis (cos) as the y-axis (sin). The angle for both must be 45, because x and y are orthogonal: 90 deg, so if the angle with x is 45, then the angle with y must be 90-45=45. So: for this point, both angles are 45, and the distance to x (cos) is equal to the distance to y (sin). Therefore, cos(45) = sin(45). Additionally, cos(45) = sin(45+90) = sin(45+360n) = sin(135+360n) with n integer.
A 45-45-90 triangle has the hypotenuse of 1. what is the length of one of its legs?
sin theta = opp/hyp sin 45 = opp/1 opp = sin 45 = sqrt(2)/2 ~= 0.7071
