Question

prove that

sec²(tan`¹2)+cosec²(cot`¹3)=15​

Answer 1

Answer:

15 = 15

Step-by-step explanation:

See the above picture

I hope the above picture helps you

Answer 2

Answer:

think so.,

tan`¹2= alpha and cot`¹3=beta.

:.tan alpha =2 and cot beta =3

:. sec² alpha +cosec² beta =1+tan² alpha+1+cot² beta

=1+4+1+9

=15(prove)

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