The sides of a triangle are 195, 157 and 210, respectively. What is the area of the triangle?
A). 10,250 sq. units
B). 11,260 sq. units
C). 14,586 sq. units
D). 73,250 sq. units
1. If tan45°=cotϴ, then the value of ϴ, in radian is
2. If cot$(\frac{A}{2})$ = x, then the value of x is
4. A missile travels at 1422 km/h. How many metres does it travel in one second?
5. If $tan \theta + cot \theta $= x, then what is the value of $tan^{4} \theta + cot^{4} \theta $?
6. If cos 21° = x/y, then cosec 21° cos 69° is equal to
8. The simplified value of $(sec A - cos A)^{2} + (cosec A - sin A)^{2} - (cot A - tan A)^{2}$ is