To find the value of sin37° sin53° tan37° tan53°, we can use some trigonometric identities and properties.
First, we know that:
- sin(90° – x) = cos(x),
- Thus, sin53° = cos37°.
Using this, we can rewrite the expression:
sin37° sin53° = sin37° cos37°
Next, we focus on the tangent terms:
- tan(x) = sin(x) / cos(x),
- So, tan37° = sin37° / cos37° and tan53° = sin53° / cos53° = cos37° / sin37°.
Now, multiplying the tangent terms, we have:
tan37° tan53° = (sin37° / cos37°)(cos37° / sin37°) = 1
Now, substituting these values back into our original expression:
sin37° sin53° tan37° tan53° = (sin37° cos37°) * 1 = sin37° cos37°
Finally, applying the identity:
sin(2x) = 2sin(x)cos(x)
Where for x = 37°, we have:
sin(74°) = 2sin37°cos37°
Thus, we can write:
sin37° cos37° = (1/2) sin(74°)
To find sin(74°), as it’s not a special angle, we can find its approximate value or leave it as is. However, since this value involves a known angle, we can express:
sin(74°) = 0.9612616959 (approx)
Hence, the final value is:
sin37° sin53° tan37° tan53° = (1/2) * sin(74°)
In conclusion, the value of sin37° sin53° tan37° tan53° can be expressed as:
(1/2) sin(74°)