Question

3.If tan h^(2)x=tan^(2)theta then cos h2x= 1) cos2 theta 2) sec2 theta 3) sin2 theta 4) cos theta​

Answer 1

Hydrogen has three naturally occurring isotopes: 1H (protium), 2H (deuterium), and 3H (tritium). Other highly unstable nuclei (4H to 7H) have been synthesized in the laboratory, but do not occur in nature. The most stable radioisotope of hydrogen is tritium, with a half-life of 12.32 years. All heavier isotopes are synthetic and have a half-life less than a zeptosecond (10-21 sec). Of these, 5H is the most stable, and the least stable isotope is 7H .

Answer 2

Answer:

option 4 cos teta is answer..

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