Question

solve this question​

Answer 1

Answer:

Step-by-step explanation:

FRIEND THE ANSWER IS ONE.

NOW CONSIDER THE TAN TERMS. ALL OF THEM GET CANCELLED OUT BECAUSE THEY ARE ALL COMPLEMENTARY TO EACH OTHER.

EVERY TERM GETS CANCELLED OUT AND YOU GET ONE.

NOW CONSIDER THE LEFT SIDE TERM. OPEN THE TERMS BY APPLYING SIN AND COS FORMULAS. WHEN YOU OPEN THEM AGAIN USE THE SAME CONCEPT[COMPLEMENTARY ANGLES].

JUST CONVERT COS40 AS SIN50. EVERYTHING WILL GET CANCELLED OUT AND AT LAST ONLY 1 WILL BE LEFT!!.

THIS IS THE ANSWER. ENJOY GAINING KNOWLEDGE AND KEEP MOTIVATED AND IF POSSIBLE PLEASE DO MARK AS THE BRAINLIEST ANSWER.