The value of \(sec^6\theta-tan^6\theta-3sec^2\theta \space tan^2\theta+1\over cos^4\theta-sin^4\theta+2sin^2\theta+2\) is :
The marked price of an article is Rs.1,280. If a shopkeeper sold the article at 12% profit after giving 30% discount, then the cost price of the article is:
If \((2\space sin A+cosecA)=2\sqrt2\), where 0° < A < 90°, then the value of \(2(sin^4A+cos^4A)\) is:
In a triangle ABC, right-angled at C, if \(sec A={13\over5}\), then find the value of \(\frac{1+ \sin A}{\cos B}\).
If cosec39° = x, the value of \({1 \over cosec^251°}+sin^239°+tan^251°-{1 \over sin^2 51°sec^2 39°} \) is