Question

which of the following pair of angles are not a pair of complementary angles? a) 60°, 30° b) 66°, 34° c) 46°,44°​

Answer 1

Answer:

B

Step-by-step explanation:

66°, 34° are not pair of complementary angle. Because of both the given angles not equal to 90°.

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Answer 2

• As per the data given in the question, we have to find the value of the expression.

          Given data:- Complementary angles

          To find:-Value of given expression=?

          Solution:-

• Two angles that added up $90$ ° is called complementary angle.
• The Complementary angle of trigonometric ratios is

         $\sin \left(90^{\circ}-\mathrm{A}\right)=\cos \mathrm{A} \text { and } \cos \left(90^{\circ}-\mathrm{A}\right)=\sin \mathrm{A.} \\\tan \left(90^{\circ}-\mathrm{A}\right)=\cot \mathrm{A} \text { and } \cot \left(90^{\circ}-\mathrm{A}\right)=\tan A.\\sec \left(90^{\circ}-\mathrm{A}\right)= cosec\ A \ and \ cosec\ (90^{\circ}-\mathrm{A})=sec\ A.$

        so that,

        $60+30=90\\66+34=100\\46+44=90$

    Hence $66$° and $34$° are not a pair of Complementary angles.