Question

sin15° sec75°=??? evalute this,urgent.

Answer 1

sin15° sec75°


sin15°. Sec (90-15)

Sin15. Cosec15 ....... [ Sec(90-A) ~ cosecA ]

Sin15.(1/sin15) .......[ cosec A ~ 1/sinA]

1



Hope it helps

Answer 2

Answer:

The solution of sin 15° sec 75° is equal to 1  

Step-by-step explanation:

Solve : sin 15° sec 75°  

Solution :  

$\sec\theta=\frac{1}{\cos\theta}\\\\\implies\sec 75=\frac{1}{\cos 75}$

$\sin 15\cdot \sec 75\\\\\implies \sin 15\cdot \frac{1}{\cos 75}\\\\\implies \sin 15\times \frac{1}{\cos(90-15)}\\\\\implies \sin 15\times \frac{1}{\sin 15}\\\\\implies 1$

Therefore, The solution of sin 15° sec 75° is equal to 1