sydnul0olaYasmithay sydnul0olaYasmithay

15-08-2016
Mathematics

Answered

Which pair of angles has congruent values for the sin x° and the cos y°?

Select one:

A40°; 140°
B40°; 80°
C40°; 50°
D40°; 40°

Verified Answer :

andriansp andriansp

19-08-2016

We need to remember that cos y = sin (90-y)

So , the angles that has congruent values for sin x and cos y is : C. 40° and 50°

cos 40 = sin (90 - 50)

cos 40 = sin 40

hope this helps

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