1.

Prove that 1 + cot a minus cosec a 1 + 10 A + 6 equal to 2

Answer»

ANSWER:

Step-by-step EXPLANATION:

(1+cot−)(1+tan+sec)=(1+cossin−1sin)(1+sincos+1)

=(sin+cos−1sin)(sin+cos+1cos)

=(sin+cos)2−12sincos

=sin2+cos2+2sincos−1sincos

=1+2sincos−1sincos

=2sincossincos

=2



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