Help solve questions 1-10

Test 7 1) verify: Cosx(tan-sec (-x)) = sinx-i? ( hint: formulas) tanx 2) verify : (CSC x + sec 2x ) ( it (o+x ) "cosix ? ( hint: formulas) ( it tanx ) . 3 ) find the exact value or sin ( 7 SI )? ( hint: radians ) 4) veriry: csc (2 -t)= sect? 5 ) find the exact value of: cos ( 2 ) ? ( hint: done like #3) 6 ) find tan (20) ? ( hint: formula tan - A 5/ 7) Rewrite as a product: sin (3x) +sin ( 7x ) 8.) Evaluate: cos ( 45" ) sin (1) ? ( Hint: Calculator, degrees) 9 ) Find one soultion between of 2it for : (sc' - 4= 0? (Hint: (sc= sin) 10 ) A woman is standing 8 meters away from a 10 - meter tall building . At what angle is she booking to the top of the building ! 11.Test 7 1) verify : cosx(tan-sec (- x ) ) = sinx-i? ( hint: formulas ) 2 ) verify : (csc z x + sec 2 x , ) ( itcanxx ) - costx -1? ( hint : formulas 3 ) find the exact value or sin ( ? ) ? ( hint : radians ) 4 ) veriry : CSC ( 7 - t )= sect? 5 ) find the exact value or: cos ( 12 ) ? ( hint : done like #3 ) 6 ) find tan ( 20) ? ( hint: formula tan - A 5 8 er 7 ) Rewrite as a product : sin ( 3x ) +sin ( 7 x ) 8.) Evaluate: cos ( 45") sin (15)? ( Hint: calculator, degrees) 9 ) Find one soultion between of 2 st for : (sc - 4= 0? (Hint: ese= sin 10 ) A woman is standing 8 meters away from a 10-meter tall building - At what angle is she booking to the top of the building