Q18 of 118 Page 5

If find the values of tanx, secx and cosecx

Given

We know that sin²x + cos²x = 1→cos²x =1 – sin²x

Prove the following identities

cosx (tanx + 2) (2 tanx + 1) = 2 secx + 5 sinx

If then prove that is also equal to a.

If then find the value of

If show that