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Maths Puzzle
Numerical Ability
Trigonometry
If sin theta + cos theta = 1, then the value of sin theta*cos theta is:
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- sin theta + cos theta = 1
squaring both sides
sin 2theta+ cos2theta + 2 sin theta cos theta = 1
1+ 2 sin theta cos theta = 1
2 sin theta cos theta=0
sin theta cos theta = 0 - 12 years agoHelpfull: Yes(5) No(0)
- 0 is answer;because
place theta=90degrees
sin theta=1;cos theta=0;then it satisfies sin theta+cos theta=1;
so,from eqn sin theta*cos theta:1*0=0 - 12 years agoHelpfull: Yes(0) No(0)
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