Asked by jhonas
what is the ffive trigonometric function of sin =2/5 ?
Answers
Answered by
Reiny
are you asking something like. ....
"What are the other five trig ratios if
sin ß = 2/5 " ?
since the sine of an angle is the opposite/hypotenuse, construct a right angled triangle in the first quadrant with an opposite side of 2 and a hypotenuse of 5.
By Pythagoras the third side, let's call it x, is found by
x^2 + 2^2 = 5^2
x^2 = 21
x = ± √21
if ß is in the first quadrant, then
cosß = √21/5, tanß = 2/√21, cscß = 5/2, secß = 5/√21 and cotß = √21/2
if ß is in the second quadrant, you tell me what the five ratios are.
"What are the other five trig ratios if
sin ß = 2/5 " ?
since the sine of an angle is the opposite/hypotenuse, construct a right angled triangle in the first quadrant with an opposite side of 2 and a hypotenuse of 5.
By Pythagoras the third side, let's call it x, is found by
x^2 + 2^2 = 5^2
x^2 = 21
x = ± √21
if ß is in the first quadrant, then
cosß = √21/5, tanß = 2/√21, cscß = 5/2, secß = 5/√21 and cotß = √21/2
if ß is in the second quadrant, you tell me what the five ratios are.
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