1.

Sec 70. sin 20 - cos 20. cosec 70​

Answer»

Step-by-step explanation:

sec 70. SIN(90-70) - cos 20. COSEC(90-20)

sec 70. cos70 - cos 20 . sec 20

1/cos70. cos70 - COS20 . 1/cos20

1-1

0



Discussion

No Comment Found

Related InterviewSolutions