Question

class 10 introduction to trigonometry 3 marks questions​

Answer 1

Questions:

(1) Show that:

(1+tanA tanB)²+(tanA- tanB)²=sec²A sec²B.

(2) (1/sec²thita- cos²thita+1/cosec²thita- sin²thita)sin²thita×cos²thita.

(3) If tan thita + sin thita=m and tan thita - sin thita =n, show that m²- n²= 4√mn.

(4) If sec thita- tan thita= 4 then prove that cos thita= 8/17.

Hope all answers will definitely comes.......

Answer 2

Answer:

it to easy

mark Mr brainlist thnks