Question

please solve question





1. Using the identity sec²0 = 1 + tan²0, prove that

tan 0+ sec 0-1 1+sin 0 tan 0-sec 0+1 cos 0

2. Using the identity cosec²0=1+cot²0, prove that

cot 0+cosec 0-1 1+cos 0 cot 0-cosec 0+1 sin 0

3. tan A+sin A _ sec A +1 tan A-sin A sec A-1

4. cot A-cos A cosec A-1 cot A+cos A cosec A+1

5. (sec 0-tan 0) -=(1+2 tan²0-2 sec 0 tan 0)

(sec 0+tan 0)​

Answer 1

Answer:

2)

( sin²θ + cos² θ ) = 1

sin²θ = 1 - cos²θ

Also , sinθ = 1 / cosecθ

Coming back to your question :

L. H. S

=> (1 - cos² θ ) cosec² θ

=> sin² θ ( cosec² θ )

=> ( sin θ . cosec θ )²

=> ( cosec θ / cosec θ ) ²

=> 1²

=> 1

=> R. H. S

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Answer 2

Answer:

"A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products."