Question

1. The value of (tan 27° – cot 639) is​

Answer 1

Answer:

tan27*cot63-sec² 27

=tan27*cot (90-27)-sec²27

=tan27*tan27-sec²27

=tan²27-sec ²27             [1+tan²A=sec²A]

=tan²27-1-tan²27

=-1 ANS

Answer 2

Answer:

tan(27°)-cot(63°)=0

Step-by-step explanation:

=tan(27°)-cot(63°)

=tan(27°)-cot(90°-27°)

=tan(27°)-tan(27°)

=0

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