1 + tan²2θ =
A). sec²¸
B). csc²¸
C). csc²2¸
D). sec²2¸
Considering 0° < x < 180°, angle of cos x = -0.8726 is
A). 150.76°
B). 160.72°
C). 165.82°
D). 167.35°
Dimensions of solid includes
A). length
B). breadth
C). height
D). all of the above
If sine is 0.2586 then value of acute angle is
A). 14.99°
B). 16°
C). 17.98°
D). 18°
Considering Cosine rule, b² + c² - a²⁄2bc is equal to
A). cos A
B). cos B
C). cos C
D). cos D