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Maths Puzzle
Numerical Ability
Express cos 148 degrees as the same function of a positive acute angle.
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book Other Question
sin x=1/4 and 0 < (or equal to) x < (or equal to) pie/2, the cos x=?
1. square root 7/ 4
2. Square root 15/ 4
3. 3/4
4. 1/ square root of 15
5. 1/ square root of 17
Please help with this!
sqrt 4x + 1 + 3 = 0
The 4x+1 is inside the radical sign - the +3 = 0 is not.
Thanks